1912481772 has 24 divisors (see below), whose sum is σ = 4468373616. Its totient is φ = 636648768.

The previous prime is 1912481741. The next prime is 1912481797. The reversal of 1912481772 is 2771842191.

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, 96183 + ... + 114350.

It is an arithmetic number, because the mean of its divisors is an integer number (186182234).

Almost surely, 2^1912481772 is an apocalyptic number.

1912481772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1912481772 is an abundant number, since it is smaller than the sum of its proper divisors (2555891844).

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

1912481772 is a wasteful number, since it uses less digits than its factorization.

1912481772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211297 (or 211295 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 1912481772 is about 43731.9308057625. The cubic root of 1912481772 is about 1241.2685967789.

The spelling of 1912481772 in words is "one billion, nine hundred twelve million, four hundred eighty-one thousand, seven hundred seventy-two".