1831812839408 has 80 divisors (see below), whose sum is σ = 3783368134656. Its totient is φ = 857189583360.

The previous prime is 1831812839357. The next prime is 1831812839471. The reversal of 1831812839408 is 8049382181381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66281753 + ... + 66309383.

Almost surely, 2^{1831812839408} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1831812839408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891684067328).

1831812839408 is an abundant number, since it is smaller than the sum of its proper divisors (1951555295248).

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

1831812839408 is a wasteful number, since it uses less digits than its factorization.

1831812839408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31542 (or 31536 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 1831812839408 in words is "one trillion, eight hundred thirty-one billion, eight hundred twelve million, eight hundred thirty-nine thousand, four hundred eight".