1979969964 has 48 divisors (see below), whose sum is σ = 5366489856. Its totient is φ = 556430400.

The previous prime is 1979969951. The next prime is 1979970001. The reversal of 1979969964 is 4699699791.

It is a super-2 number, since 2×1979969964² = 7840562116684322592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188082 + ... + 198329.

It is an arithmetic number, because the mean of its divisors is an integer number (111801872).

Almost surely, 2^1979969964 is an apocalyptic number.

1979969964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1979969964 is an abundant number, since it is smaller than the sum of its proper divisors (3386519892).

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

1979969964 is a wasteful number, since it uses less digits than its factorization.

1979969964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386486 (or 386484 counting only the distinct ones).

The product of its digits is 59521392, while the sum is 69.

The square root of 1979969964 is about 44496.8534168429. The cubic root of 1979969964 is about 1255.7008860457.

The spelling of 1979969964 in words is "one billion, nine hundred seventy-nine million, nine hundred sixty-nine thousand, nine hundred sixty-four".