1617665164 has 12 divisors (see below), whose sum is σ = 2953997424. Its totient is φ = 773665904.

The previous prime is 1617665113. The next prime is 1617665171. The reversal of 1617665164 is 4615667161.

It is a self number, because there is not a number n which added to its sum of digits gives 1617665164.

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, 8791567 + ... + 8791750.

It is an arithmetic number, because the mean of its divisors is an integer number (246166452).

Almost surely, 2^1617665164 is an apocalyptic number.

It is an amenable number.

1617665164 is a deficient number, since it is larger than the sum of its proper divisors (1336332260).

1617665164 is a wasteful number, since it uses less digits than its factorization.

1617665164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17583344 (or 17583342 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 1617665164 is about 40220.2084032393. The cubic root of 1617665164 is about 1173.8957881082.

The spelling of 1617665164 in words is "one billion, six hundred seventeen million, six hundred sixty-five thousand, one hundred sixty-four".