2659890164 has 12 divisors (see below), whose sum is σ = 4655412804. Its totient is φ = 1329772224.

The previous prime is 2659890157. The next prime is 2659890169. The reversal of 2659890164 is 4610989562.

It can be written as a sum of positive squares in 2 ways, for example, as 2287708900 + 372181264 = 47830^2 + 19292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659890169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4799 + ... + 73094.

It is an arithmetic number, because the mean of its divisors is an integer number (387951067).

Almost surely, 2^2659890164 is an apocalyptic number.

It is an amenable number.

2659890164 is a deficient number, since it is larger than the sum of its proper divisors (1995522640).

2659890164 is a wasteful number, since it uses less digits than its factorization.

2659890164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86434 (or 86432 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 2659890164 is about 51574.1230075704. The cubic root of 2659890164 is about 1385.5469111682.

The spelling of 2659890164 in words is "two billion, six hundred fifty-nine million, eight hundred ninety thousand, one hundred sixty-four".