1081839312 has 30 divisors (see below), whose sum is σ = 3027647922. Its totient is φ = 360613056.

The previous prime is 1081839259. The next prime is 1081839329. The reversal of 1081839312 is 2139381801.

It can be written as a sum of positive squares in only one way, i.e., 1079516736 + 2322576 = 32856^2 + 1524^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3756243 + ... + 3756530.

Almost surely, 2^1081839312 is an apocalyptic number.

1081839312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081839312 is an abundant number, since it is smaller than the sum of its proper divisors (1945808610).

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

1081839312 is a wasteful number, since it uses less digits than its factorization.

1081839312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512787 (or 7512778 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1081839312 is about 32891.3257865961. The cubic root of 1081839312 is about 1026.5676782806.

The spelling of 1081839312 in words is "one billion, eighty-one million, eight hundred thirty-nine thousand, three hundred twelve".