501965988 has 36 divisors (see below), whose sum is σ = 1213059120. Its totient is φ = 161549024.

The previous prime is 501965977. The next prime is 501966019. The reversal of 501965988 is 889569105.

It is a super-2 number, since 2×501965988² = 503939706217632288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501965988.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14778 + ... + 34961.

Almost surely, 2^501965988 is an apocalyptic number.

501965988 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

501965988 is an abundant number, since it is smaller than the sum of its proper divisors (711093132).

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

501965988 is a wasteful number, since it uses less digits than its factorization.

501965988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49804 (or 49773 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The square root of 501965988 is about 22404.5974746256. The cubic root of 501965988 is about 794.7394359883.

The spelling of 501965988 in words is "five hundred one million, nine hundred sixty-five thousand, nine hundred eighty-eight".