2128968690 has 16 divisors (see below), whose sum is σ = 5109524928. Its totient is φ = 567724976.

The previous prime is 2128968661. The next prime is 2128968727. The reversal of 2128968690 is 968698212.

It is a super-2 number, since 2×2128968690² = 9065015366000632200, which contains 22 as substring.

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, 35482782 + ... + 35482841.

It is an arithmetic number, because the mean of its divisors is an integer number (319345308).

Almost surely, 2^2128968690 is an apocalyptic number.

2128968690 is an abundant number, since it is smaller than the sum of its proper divisors (2980556238).

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

2128968690 is a wasteful number, since it uses less digits than its factorization.

2128968690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70965633.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 2128968690 is about 46140.7486935355. The cubic root of 2128968690 is about 1286.4406599048.

The spelling of 2128968690 in words is "two billion, one hundred twenty-eight million, nine hundred sixty-eight thousand, six hundred ninety".