2991101690 has 32 divisors (see below), whose sum is σ = 5417208720. Its totient is φ = 1189081600.

The previous prime is 2991101689. The next prime is 2991101717. The reversal of 2991101690 is 961011992.

2991101690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1822350721 + 1168750969 = 42689^2 + 34187^2 .

It is a super-2 number, since 2×2991101690² = 17893378639841712200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294256 + ... + 1296564.

Almost surely, 2^2991101690 is an apocalyptic number.

2991101690 is a deficient number, since it is larger than the sum of its proper divisors (2426107030).

2991101690 is a wasteful number, since it uses less digits than its factorization.

2991101690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 2991101690 is about 54690.9653416357. The cubic root of 2991101690 is about 1440.8222043849.

The spelling of 2991101690 in words is "two billion, nine hundred ninety-one million, one hundred one thousand, six hundred ninety".