1083861840 has 80 divisors (see below), whose sum is σ = 3536827200. Its totient is φ = 273816576.

The previous prime is 1083861839. The next prime is 1083861853. The reversal of 1083861840 is 481683801.

It is a tau number, because it is divible by the number of its divisors (80).

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, 114285 + ... + 123404.

It is an arithmetic number, because the mean of its divisors is an integer number (44210340).

Almost surely, 2^1083861840 is an apocalyptic number.

1083861840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1083861840 is an abundant number, since it is smaller than the sum of its proper divisors (2452965360).

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

1083861840 is a wasteful number, since it uses less digits than its factorization.

1083861840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237724 (or 237718 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1083861840 is about 32922.0570438726. The cubic root of 1083861840 is about 1027.2070120881.

The spelling of 1083861840 in words is "one billion, eighty-three million, eight hundred sixty-one thousand, eight hundred forty".