618860164 has 12 divisors (see below), whose sum is σ = 1166313484. Its totient is φ = 285627744.

The previous prime is 618860159. The next prime is 618860213. The reversal of 618860164 is 461068816.

It can be written as a sum of positive squares in 2 ways, for example, as 213160000 + 405700164 = 14600^2 + 20142^2 .

It is a super-2 number, since 2×618860164² = 765975805172213792, which contains 22 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, 5950527 + ... + 5950630.

Almost surely, 2^618860164 is an apocalyptic number.

It is an amenable number.

618860164 is a deficient number, since it is larger than the sum of its proper divisors (547453320).

618860164 is a wasteful number, since it uses less digits than its factorization.

618860164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11901174 (or 11901172 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 618860164 is about 24876.9002088283. The cubic root of 618860164 is about 852.1790292154.

The spelling of 618860164 in words is "six hundred eighteen million, eight hundred sixty thousand, one hundred sixty-four".