1931993292 has 24 divisors (see below), whose sum is σ = 4509836352. Its totient is φ = 643733200.

The previous prime is 1931993279. The next prime is 1931993293. The reversal of 1931993292 is 2923991391.

It is not an unprimeable number, because it can be changed into a prime (1931993293) 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, 1434 + ... + 62177.

It is an arithmetic number, because the mean of its divisors is an integer number (187909848).

Almost surely, 2^1931993292 is an apocalyptic number.

1931993292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1931993292 is an abundant number, since it is smaller than the sum of its proper divisors (2577843060).

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

1931993292 is a wasteful number, since it uses less digits than its factorization.

1931993292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66149 (or 66147 counting only the distinct ones).

The product of its digits is 236196, while the sum is 48.

The square root of 1931993292 is about 43954.4456454634. The cubic root of 1931993292 is about 1245.4755455012.

The spelling of 1931993292 in words is "one billion, nine hundred thirty-one million, nine hundred ninety-three thousand, two hundred ninety-two".