1912881155 has 16 divisors (see below), whose sum is σ = 2332049664. Its totient is φ = 1505956320.

The previous prime is 1912881143. The next prime is 1912881169. The reversal of 1912881155 is 5511882191.

It is not a de Polignac number, because 1912881155 - 2⁸ = 1912880899 is a prime.

It is a super-2 number, since 2×1912881155² = 7318228626308268050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430274 + ... + 434696.

It is an arithmetic number, because the mean of its divisors is an integer number (145753104).

Almost surely, 2^1912881155 is an apocalyptic number.

1912881155 is a deficient number, since it is larger than the sum of its proper divisors (419168509).

1912881155 is a wasteful number, since it uses less digits than its factorization.

1912881155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786.

The product of its digits is 28800, while the sum is 41.

The square root of 1912881155 is about 43736.4968304504. The cubic root of 1912881155 is about 1241.3549953491.

The spelling of 1912881155 in words is "one billion, nine hundred twelve million, eight hundred eighty-one thousand, one hundred fifty-five".