1809372912 has 40 divisors (see below), whose sum is σ = 4773670656. Its totient is φ = 590291136.

The previous prime is 1809372899. The next prime is 1809372931. The reversal of 1809372912 is 2192739081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398758 + ... + 403269.

Almost surely, 2^1809372912 is an apocalyptic number.

1809372912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1809372912 is an abundant number, since it is smaller than the sum of its proper divisors (2964297744).

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

1809372912 is a wasteful number, since it uses less digits than its factorization.

1809372912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802085 (or 802079 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1809372912 is about 42536.7242744431. The cubic root of 1809372912 is about 1218.5481501980.

The spelling of 1809372912 in words is "one billion, eight hundred nine million, three hundred seventy-two thousand, nine hundred twelve".