164616531 has 8 divisors (see below), whose sum is σ = 219804624. Its totient is φ = 109586400.

The previous prime is 164616527. The next prime is 164616539. The reversal of 164616531 is 135616461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164616531 - 2² = 164616527 is a prime.

It is a super-2 number, since 2×164616531² = 54197204556947922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164616492 and 164616501.

It is not an unprimeable number, because it can be changed into a prime (164616539) 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 7 ways as a sum of consecutive naturals, for example, 37036 + ... + 41241.

It is an arithmetic number, because the mean of its divisors is an integer number (27475578).

Almost surely, 2^164616531 is an apocalyptic number.

164616531 is a deficient number, since it is larger than the sum of its proper divisors (55188093).

164616531 is an equidigital number, since it uses as much as digits as its factorization.

164616531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78981.

The product of its digits is 12960, while the sum is 33.

The square root of 164616531 is about 12830.2973854857. The cubic root of 164616531 is about 548.0554260010.

The spelling of 164616531 in words is "one hundred sixty-four million, six hundred sixteen thousand, five hundred thirty-one".