164623081 has 8 divisors (see below), whose sum is σ = 188807744. Its totient is φ = 140605200.

The previous prime is 164623061. The next prime is 164623099. The reversal of 164623081 is 180326461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 164623081 - 2¹³ = 164614889 is a prime.

It is a super-2 number, since 2×164623081² = 54201517595865122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164623061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39570 + ... + 43531.

It is an arithmetic number, because the mean of its divisors is an integer number (23600968).

Almost surely, 2^164623081 is an apocalyptic number.

It is an amenable number.

164623081 is a deficient number, since it is larger than the sum of its proper divisors (24184663).

164623081 is an equidigital number, since it uses as much as digits as its factorization.

164623081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83391.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 164623081 is about 12830.5526381368. The cubic root of 164623081 is about 548.0626948445.

The spelling of 164623081 in words is "one hundred sixty-four million, six hundred twenty-three thousand, eighty-one".