164081604 has 12 divisors (see below), whose sum is σ = 382857104. Its totient is φ = 54693864.

The previous prime is 164081597. The next prime is 164081633. The reversal of 164081604 is 406180461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×164081604⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6836722 + ... + 6836745.

Almost surely, 2^164081604 is an apocalyptic number.

It is an amenable number.

164081604 is an abundant number, since it is smaller than the sum of its proper divisors (218775500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164081604 is a wasteful number, since it uses less digits than its factorization.

164081604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13673474 (or 13673472 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 164081604 is about 12809.4341795413. The cubic root of 164081604 is about 547.4611402540.

The spelling of 164081604 in words is "one hundred sixty-four million, eighty-one thousand, six hundred four".