164163901531 has 16 divisors (see below), whose sum is σ = 191043014400. Its totient is φ = 138147751008.

The previous prime is 164163901529. The next prime is 164163901541. The reversal of 164163901531 is 135109361461.

It is a cyclic number.

It is not a de Polignac number, because 164163901531 - 2¹ = 164163901529 is a prime.

It is a super-2 number, since 2×164163901531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164163901541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62140 + ... + 576358.

It is an arithmetic number, because the mean of its divisors is an integer number (11940188400).

Almost surely, 2^164163901531 is an apocalyptic number.

164163901531 is a deficient number, since it is larger than the sum of its proper divisors (26879112869).

164163901531 is an equidigital number, since it uses as much as digits as its factorization.

164163901531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515058.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 164163901531 in words is "one hundred sixty-four billion, one hundred sixty-three million, nine hundred one thousand, five hundred thirty-one".