1972969912 has 32 divisors (see below), whose sum is σ = 3800890800. Its totient is φ = 959745024.

The previous prime is 1972969883. The next prime is 1972969913. The reversal of 1972969912 is 2199692791.

It is a super-2 number, since 2×1972969912² = 7785220547314575488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972969913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24238 + ... + 67330.

Almost surely, 2^1972969912 is an apocalyptic number.

It is an amenable number.

1972969912 is a deficient number, since it is larger than the sum of its proper divisors (1827920888).

1972969912 is a wasteful number, since it uses less digits than its factorization.

1972969912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43255 (or 43251 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 55.

The square root of 1972969912 is about 44418.1259397557. The cubic root of 1972969912 is about 1254.2193230525.

The spelling of 1972969912 in words is "one billion, nine hundred seventy-two million, nine hundred sixty-nine thousand, nine hundred twelve".