164291638 has 32 divisors (see below), whose sum is σ = 302690304. Its totient is φ = 65273472.

The previous prime is 164291627. The next prime is 164291653. The reversal of 164291638 is 836192461.

164291638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164291638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10795 + ... + 21097.

It is an arithmetic number, because the mean of its divisors is an integer number (9459072).

Almost surely, 2^164291638 is an apocalyptic number.

164291638 is a deficient number, since it is larger than the sum of its proper divisors (138398666).

164291638 is a wasteful number, since it uses less digits than its factorization.

164291638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396.

The product of its digits is 62208, while the sum is 40.

The square root of 164291638 is about 12817.6299681337. The cubic root of 164291638 is about 547.6946346911.

The spelling of 164291638 in words is "one hundred sixty-four million, two hundred ninety-one thousand, six hundred thirty-eight".