1969908872 has 16 divisors (see below), whose sum is σ = 3695503500. Its totient is φ = 984441280.

The previous prime is 1969908859. The next prime is 1969908901. The reversal of 1969908872 is 2788099691.

It can be written as a sum of positive squares in 2 ways, for example, as 1927736836 + 42172036 = 43906^2 + 6494^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47579 + ... + 78762.

Almost surely, 2^1969908872 is an apocalyptic number.

It is an amenable number.

1969908872 is a deficient number, since it is larger than the sum of its proper divisors (1725594628).

1969908872 is a wasteful number, since it uses less digits than its factorization.

1969908872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128296 (or 128292 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 59.

The square root of 1969908872 is about 44383.6554600903. The cubic root of 1969908872 is about 1253.5703517215.

The spelling of 1969908872 in words is "one billion, nine hundred sixty-nine million, nine hundred eight thousand, eight hundred seventy-two".