1831890612 has 24 divisors (see below), whose sum is σ = 4365357696. Its totient is φ = 597637888.

The previous prime is 1831890583. The next prime is 1831890623. The reversal of 1831890612 is 2160981381.

1831890612 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 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, 1623453 + ... + 1624580.

It is an arithmetic number, because the mean of its divisors is an integer number (181889904).

Almost surely, 2^1831890612 is an apocalyptic number.

1831890612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1831890612 is an abundant number, since it is smaller than the sum of its proper divisors (2533467084).

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

1831890612 is a wasteful number, since it uses less digits than its factorization.

1831890612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248087 (or 3248085 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1831890612 is about 42800.5912575983. The cubic root of 1831890612 is about 1223.5822803522.

The spelling of 1831890612 in words is "one billion, eight hundred thirty-one million, eight hundred ninety thousand, six hundred twelve".