1912912693 has 2 divisors, whose sum is σ = 1912912694. Its totient is φ = 1912912692.

The previous prime is 1912912681. The next prime is 1912912717. The reversal of 1912912693 is 3962192191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1692746449 + 220166244 = 41143^2 + 14838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1912912693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1912912633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956456346 + 956456347.

It is an arithmetic number, because the mean of its divisors is an integer number (956456347).

Almost surely, 2^1912912693 is an apocalyptic number.

It is an amenable number.

1912912693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912912693 is an equidigital number, since it uses as much as digits as its factorization.

1912912693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 43.

The square root of 1912912693 is about 43736.8573745302. The cubic root of 1912912693 is about 1241.3618174559.

The spelling of 1912912693 in words is "one billion, nine hundred twelve million, nine hundred twelve thousand, six hundred ninety-three".