1931972313892 has 6 divisors (see below), whose sum is σ = 3380951549318. Its totient is φ = 965986156944.

The previous prime is 1931972313889. The next prime is 1931972313907. The reversal of 1931972313892 is 2983132791391.

It can be written as a sum of positive squares in only one way, i.e., 1457394615076 + 474577698816 = 1207226^2 + 688896^2 .

It is a super-3 number, since 3×1931972313892³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241496539233 + ... + 241496539240.

Almost surely, 2^{1931972313892} is an apocalyptic number.

It is an amenable number.

1931972313892 is a deficient number, since it is larger than the sum of its proper divisors (1448979235426).

1931972313892 is a wasteful number, since it uses less digits than its factorization.

1931972313892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482993078477 (or 482993078475 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 58.

The spelling of 1931972313892 in words is "one trillion, nine hundred thirty-one billion, nine hundred seventy-two million, three hundred thirteen thousand, eight hundred ninety-two".