1912157292 has 24 divisors (see below), whose sum is σ = 4465492416. Its totient is φ = 636844048.

The previous prime is 1912157281. The next prime is 1912157329. The reversal of 1912157292 is 2927512191.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1912157292.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52878 + ... + 81365.

It is an arithmetic number, because the mean of its divisors is an integer number (186062184).

Almost surely, 2^1912157292 is an apocalyptic number.

1912157292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1912157292 is an abundant number, since it is smaller than the sum of its proper divisors (2553335124).

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

1912157292 is a wasteful number, since it uses less digits than its factorization.

1912157292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135437 (or 135435 counting only the distinct ones).

The product of its digits is 22680, while the sum is 39.

The square root of 1912157292 is about 43728.2207733175. The cubic root of 1912157292 is about 1241.1983931268.

The spelling of 1912157292 in words is "one billion, nine hundred twelve million, one hundred fifty-seven thousand, two hundred ninety-two".