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105182149 = 951111059
BaseRepresentation
bin1100100010011…
…11001111000101
321022220210210011
412101033033011
5203411312044
614234230221
72415014332
oct621171705
9238823704
10105182149
11544109a6
122b285371
1318a39477
14dd7d989
15937a134
hex644f3c5

105182149 has 4 divisors (see below), whose sum is σ = 105202720. Its totient is φ = 105161580.

The previous prime is 105182131. The next prime is 105182153. The reversal of 105182149 is 941281501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941281501 = 979703933.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105182149 is a prime.

It is a super-2 number, since 2×1051821492 = 22126568936516402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105182149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105182249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3982 + ... + 15040.

It is an arithmetic number, because the mean of its divisors is an integer number (26300680).

Almost surely, 2105182149 is an apocalyptic number.

It is an amenable number.

105182149 is a deficient number, since it is larger than the sum of its proper divisors (20571).

105182149 is an equidigital number, since it uses as much as digits as its factorization.

105182149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20570.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 105182149 is about 10255.8348758158. The cubic root of 105182149 is about 472.0420414649.

The spelling of 105182149 in words is "one hundred five million, one hundred eighty-two thousand, one hundred forty-nine".

Divisors: 1 9511 11059 105182149