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161077741 = 1121638167
BaseRepresentation
bin10011001100111…
…01100111101101
3102020002121010021
421212131213231
5312213441431
623552242141
73664065256
oct1146354755
9366077107
10161077741
1182a19100
1245b40351
13274aa196
141756db2d
15e21bb11
hex999d9ed

161077741 has 12 divisors (see below), whose sum is σ = 178160416. Its totient is φ = 145518120.

The previous prime is 161077739. The next prime is 161077751. The reversal of 161077741 is 147770161.

It is not a de Polignac number, because 161077741 - 21 = 161077739 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161077697 and 161077706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161077751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15640 + ... + 23806.

Almost surely, 2161077741 is an apocalyptic number.

161077741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161077741 is a deficient number, since it is larger than the sum of its proper divisors (17082675).

161077741 is a wasteful number, since it uses less digits than its factorization.

161077741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352 (or 8341 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 161077741 is about 12691.6405952895. The cubic root of 161077741 is about 544.0997296343.

The spelling of 161077741 in words is "one hundred sixty-one million, seventy-seven thousand, seven hundred forty-one".

Divisors: 1 11 121 163 1793 8167 19723 89837 988207 1331221 14643431 161077741