2115990668 has 24 divisors (see below), whose sum is σ = 4090759680. Its totient is φ = 949637520.

The previous prime is 2115990659. The next prime is 2115990671. The reversal of 2115990668 is 8660995112.

It is a happy number.

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, 300896 + ... + 307847.

It is an arithmetic number, because the mean of its divisors is an integer number (170448320).

Almost surely, 2^2115990668 is an apocalyptic number.

It is an amenable number.

2115990668 is a deficient number, since it is larger than the sum of its proper divisors (1974769012).

2115990668 is a wasteful number, since it uses less digits than its factorization.

2115990668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608837 (or 608835 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 2115990668 is about 45999.8985651056. The cubic root of 2115990668 is about 1283.8213172873.

The spelling of 2115990668 in words is "two billion, one hundred fifteen million, nine hundred ninety thousand, six hundred sixty-eight".