164018623 has 8 divisors (see below), whose sum is σ = 167861808. Its totient is φ = 160203264.

The previous prime is 164018611. The next prime is 164018639. The reversal of 164018623 is 326810461.

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 a de Polignac number, because none of the positive numbers 2^k-164018623 is a prime.

It is a super-2 number, since 2×164018623² = 53804217381632258, 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 (164018123) 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, 5215 + ... + 18847.

It is an arithmetic number, because the mean of its divisors is an integer number (20982726).

Almost surely, 2^164018623 is an apocalyptic number.

164018623 is a deficient number, since it is larger than the sum of its proper divisors (3843185).

164018623 is a wasteful number, since it uses less digits than its factorization.

164018623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913.

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

The square root of 164018623 is about 12806.9755602172. The cubic root of 164018623 is about 547.3910855541.

The spelling of 164018623 in words is "one hundred sixty-four million, eighteen thousand, six hundred twenty-three".