2656249994 has 8 divisors (see below), whose sum is σ = 4020929220. Its totient is φ = 1315940256.

The previous prime is 2656249993. The next prime is 2656250011. The reversal of 2656249994 is 4999426562.

It can be written as a sum of positive squares in 2 ways, for example, as 2290866769 + 365383225 = 47863^2 + 19115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2656249991) 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, 6092099 + ... + 6092534.

Almost surely, 2^2656249994 is an apocalyptic number.

2656249994 is a deficient number, since it is larger than the sum of its proper divisors (1364679226).

2656249994 is a wasteful number, since it uses less digits than its factorization.

2656249994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12184744.

The product of its digits is 8398080, while the sum is 56.

The square root of 2656249994 is about 51538.8202620122. The cubic root of 2656249994 is about 1384.9145631459.

The spelling of 2656249994 in words is "two billion, six hundred fifty-six million, two hundred forty-nine thousand, nine hundred ninety-four".