1099005864 has 32 divisors (see below), whose sum is σ = 2997289440. Its totient is φ = 333032000.

The previous prime is 1099005799. The next prime is 1099005937. The reversal of 1099005864 is 4685009901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081187 + ... + 2081714.

It is an arithmetic number, because the mean of its divisors is an integer number (93665295).

Almost surely, 2^1099005864 is an apocalyptic number.

It is an amenable number.

1099005864 is an abundant number, since it is smaller than the sum of its proper divisors (1898283576).

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

1099005864 is a wasteful number, since it uses less digits than its factorization.

1099005864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162921 (or 4162917 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1099005864 is about 33151.2573517205. The cubic root of 1099005864 is about 1031.9690439005.

The spelling of 1099005864 in words is "one billion, ninety-nine million, five thousand, eight hundred sixty-four".