653794164 has 18 divisors (see below), whose sum is σ = 1652646450. Its totient is φ = 217931376.

The previous prime is 653794153. The next prime is 653794187. The reversal of 653794164 is 461497356.

It can be written as a sum of positive squares in only one way, i.e., 349989264 + 303804900 = 18708^2 + 17430^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9080439 + ... + 9080510.

Almost surely, 2^653794164 is an apocalyptic number.

It is an amenable number.

653794164 is an abundant number, since it is smaller than the sum of its proper divisors (998852286).

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

653794164 is a wasteful number, since it uses less digits than its factorization.

653794164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18160959 (or 18160954 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 653794164 is about 25569.3989761199. The cubic root of 653794164 is about 867.9212996807.

The spelling of 653794164 in words is "six hundred fifty-three million, seven hundred ninety-four thousand, one hundred sixty-four".