1840008972 has 24 divisors (see below), whose sum is σ = 4311175792. Its totient is φ = 610790400.

The previous prime is 1840008967. The next prime is 1840009021. The reversal of 1840008972 is 2798000481.

It is a self number, because there is not a number n which added to its sum of digits gives 1840008972.

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, 315229 + ... + 321012.

Almost surely, 2^1840008972 is an apocalyptic number.

1840008972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1840008972 is an abundant number, since it is smaller than the sum of its proper divisors (2471166820).

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

1840008972 is a wasteful number, since it uses less digits than its factorization.

1840008972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636489 (or 636487 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1840008972 is about 42895.3257593412. The cubic root of 1840008972 is about 1225.3871267373.

The spelling of 1840008972 in words is "one billion, eight hundred forty million, eight thousand, nine hundred seventy-two".