1083812868 has 18 divisors (see below), whose sum is σ = 2739638174. Its totient is φ = 361270944.

The previous prime is 1083812827. The next prime is 1083812879. The reversal of 1083812868 is 8682183801.

It can be written as a sum of positive squares in only one way, i.e., 1045099584 + 38713284 = 32328^2 + 6222^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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, 15052921 + ... + 15052992.

Almost surely, 2^1083812868 is an apocalyptic number.

1083812868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1083812868 is an abundant number, since it is smaller than the sum of its proper divisors (1655825306).

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

1083812868 is a wasteful number, since it uses less digits than its factorization.

1083812868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30105923 (or 30105918 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 1083812868 is about 32921.3132787864. The cubic root of 1083812868 is about 1027.1915411312.

The spelling of 1083812868 in words is "one billion, eighty-three million, eight hundred twelve thousand, eight hundred sixty-eight".