1087868844 has 18 divisors (see below), whose sum is σ = 2749890780. Its totient is φ = 362622936.

The previous prime is 1087868819. The next prime is 1087868861. The reversal of 1087868844 is 4488687801.

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, 15109254 + ... + 15109325.

It is an arithmetic number, because the mean of its divisors is an integer number (152771710).

Almost surely, 2^1087868844 is an apocalyptic number.

It is an amenable number.

1087868844 is an abundant number, since it is smaller than the sum of its proper divisors (1662021936).

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

1087868844 is a wasteful number, since it uses less digits than its factorization.

1087868844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30218589 (or 30218584 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The square root of 1087868844 is about 32982.8568198693. The cubic root of 1087868844 is about 1028.4713062927.

The spelling of 1087868844 in words is "one billion, eighty-seven million, eight hundred sixty-eight thousand, eight hundred forty-four".