1912956677 has 4 divisors (see below), whose sum is σ = 1928019456. Its totient is φ = 1897893900.

The previous prime is 1912956631. The next prime is 1912956679. The reversal of 1912956677 is 7766592191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1912956677 - 2²⁶ = 1845847813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912956679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7531199 + ... + 7531452.

It is an arithmetic number, because the mean of its divisors is an integer number (482004864).

Almost surely, 2^1912956677 is an apocalyptic number.

It is an amenable number.

1912956677 is a deficient number, since it is larger than the sum of its proper divisors (15062779).

1912956677 is a wasteful number, since it uses less digits than its factorization.

1912956677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15062778.

The product of its digits is 1428840, while the sum is 53.

The square root of 1912956677 is about 43737.3601969758. The cubic root of 1912956677 is about 1241.3713316799.

The spelling of 1912956677 in words is "one billion, nine hundred twelve million, nine hundred fifty-six thousand, six hundred seventy-seven".