6469631986 has 16 divisors (see below), whose sum is σ = 10059084288. Its totient is φ = 3117470400.

The previous prime is 6469631923. The next prime is 6469632061. The reversal of 6469631986 is 6891369646.

It is a super-2 number, since 2×6469631986² = 83712276068548608392, 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 6469631986.

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, 201550 + ... + 231433.

It is an arithmetic number, because the mean of its divisors is an integer number (628692768).

Almost surely, 2^6469631986 is an apocalyptic number.

6469631986 is a deficient number, since it is larger than the sum of its proper divisors (3589452302).

6469631986 is a wasteful number, since it uses less digits than its factorization.

6469631986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433257.

The product of its digits is 10077696, while the sum is 58.

The square root of 6469631986 is about 80434.0225650813. The cubic root of 6469631986 is about 1863.3446570534.

The spelling of 6469631986 in words is "six billion, four hundred sixty-nine million, six hundred thirty-one thousand, nine hundred eighty-six".