1912819272 has 96 divisors (see below), whose sum is σ = 5990745600. Its totient is φ = 504475776.

The previous prime is 1912819201. The next prime is 1912819297. The reversal of 1912819272 is 2729182191.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47272 + ... + 77847.

It is an arithmetic number, because the mean of its divisors is an integer number (62403600).

Almost surely, 2^1912819272 is an apocalyptic number.

1912819272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1912819272 is an abundant number, since it is smaller than the sum of its proper divisors (4077926328).

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

1912819272 is a wasteful number, since it uses less digits than its factorization.

1912819272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125155 (or 125144 counting only the distinct ones).

The product of its digits is 36288, while the sum is 42.

The square root of 1912819272 is about 43735.7893720921. The cubic root of 1912819272 is about 1241.3416089799.

The spelling of 1912819272 in words is "one billion, nine hundred twelve million, eight hundred nineteen thousand, two hundred seventy-two".