1972123912 has 32 divisors (see below), whose sum is σ = 4069608480. Its totient is φ = 888482560.

The previous prime is 1972123897. The next prime is 1972123927. The reversal of 1972123912 is 2193212791.

It is an interprime number because it is at equal distance from previous prime (1972123897) and next prime (1972123927).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89218 + ... + 109105.

It is an arithmetic number, because the mean of its divisors is an integer number (127175265).

Almost surely, 2^1972123912 is an apocalyptic number.

It is an amenable number.

1972123912 is an abundant number, since it is smaller than the sum of its proper divisors (2097484568).

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

1972123912 is a wasteful number, since it uses less digits than its factorization.

1972123912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198453 (or 198449 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 1972123912 is about 44408.6017793850. The cubic root of 1972123912 is about 1254.0400296874.

The spelling of 1972123912 in words is "one billion, nine hundred seventy-two million, one hundred twenty-three thousand, nine hundred twelve".