651142164 has 24 divisors (see below), whose sum is σ = 1530266080. Its totient is φ = 215485344.

The previous prime is 651142159. The next prime is 651142171. The reversal of 651142164 is 461241156.

It is a super-2 number, since 2×651142164² = 847972235477205792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193519 + ... + 196854.

Almost surely, 2^651142164 is an apocalyptic number.

It is an amenable number.

651142164 is an abundant number, since it is smaller than the sum of its proper divisors (879123916).

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

651142164 is a wasteful number, since it uses less digits than its factorization.

651142164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390519 (or 390517 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 651142164 is about 25517.4874154961. The cubic root of 651142164 is about 866.7461864577.

The spelling of 651142164 in words is "six hundred fifty-one million, one hundred forty-two thousand, one hundred sixty-four".