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163148141 = 1312549857
BaseRepresentation
bin10011011100101…
…11000101101101
3102100222210011202
421232113011231
5313231220031
624104455245
74020510362
oct1156270555
9370883152
10163148141
1184102682
124677a525
1327a53680
141794c469
15e4ca2cb
hex9b9716d

163148141 has 4 divisors (see below), whose sum is σ = 175698012. Its totient is φ = 150598272.

The previous prime is 163148107. The next prime is 163148159. The reversal of 163148141 is 141841361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141841361 = 757187373.

It can be written as a sum of positive squares in 2 ways, for example, as 51423241 + 111724900 = 7171^2 + 10570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-163148141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163141141) 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, 6274916 + ... + 6274941.

It is an arithmetic number, because the mean of its divisors is an integer number (43924503).

Almost surely, 2163148141 is an apocalyptic number.

It is an amenable number.

163148141 is a deficient number, since it is larger than the sum of its proper divisors (12549871).

163148141 is a wasteful number, since it uses less digits than its factorization.

163148141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12549870.

The product of its digits is 2304, while the sum is 29.

The square root of 163148141 is about 12772.9456665250. The cubic root of 163148141 is about 546.4209934094.

The spelling of 163148141 in words is "one hundred sixty-three million, one hundred forty-eight thousand, one hundred forty-one".

Divisors: 1 13 12549857 163148141