1912311747 has 40 divisors (see below), whose sum is σ = 2994883584. Its totient is φ = 1213713072.

The previous prime is 1912311721. The next prime is 1912311749. The reversal of 1912311747 is 7471132191.

It is not a de Polignac number, because 1912311747 - 2¹⁰ = 1912310723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1912311749) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 413148 + ... + 417750.

Almost surely, 2^1912311747 is an apocalyptic number.

1912311747 is a deficient number, since it is larger than the sum of its proper divisors (1082571837).

1912311747 is a wasteful number, since it uses less digits than its factorization.

1912311747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861 (or 4852 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1912311747 is about 43729.9868168286. The cubic root of 1912311747 is about 1241.2318116008.

The spelling of 1912311747 in words is "one billion, nine hundred twelve million, three hundred eleven thousand, seven hundred forty-seven".