164356631 has 16 divisors (see below), whose sum is σ = 177592800. Its totient is φ = 151632000.

The previous prime is 164356607. The next prime is 164356651. The reversal of 164356631 is 136653461.

It is a cyclic number.

It is not a de Polignac number, because 164356631 - 2¹⁸ = 164094487 is a prime.

It is a super-2 number, since 2×164356631² = 54026204307340322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164356591 and 164356600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164356651) 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, 125681 + ... + 126981.

It is an arithmetic number, because the mean of its divisors is an integer number (11099550).

Almost surely, 2^164356631 is an apocalyptic number.

164356631 is a deficient number, since it is larger than the sum of its proper divisors (13236169).

164356631 is a wasteful number, since it uses less digits than its factorization.

164356631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490.

The product of its digits is 38880, while the sum is 35.

The square root of 164356631 is about 12820.1650145386. The cubic root of 164356631 is about 547.7668469776.

The spelling of 164356631 in words is "one hundred sixty-four million, three hundred fifty-six thousand, six hundred thirty-one".