164473831 has 4 divisors (see below), whose sum is σ = 164570472. Its totient is φ = 164377192.

The previous prime is 164473801. The next prime is 164473853. The reversal of 164473831 is 138374461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164473831 is a prime.

It is a super-2 number, since 2×164473831² = 54103282167633122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164473801) 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, 45721 + ... + 49186.

It is an arithmetic number, because the mean of its divisors is an integer number (41142618).

Almost surely, 2^164473831 is an apocalyptic number.

164473831 is a deficient number, since it is larger than the sum of its proper divisors (96641).

164473831 is an equidigital number, since it uses as much as digits as its factorization.

164473831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96640.

The product of its digits is 48384, while the sum is 37.

The square root of 164473831 is about 12824.7351239704. The cubic root of 164473831 is about 547.8970172067.

The spelling of 164473831 in words is "one hundred sixty-four million, four hundred seventy-three thousand, eight hundred thirty-one".