2556847149 has 16 divisors (see below), whose sum is σ = 3517894080. Its totient is φ = 1650620160.

The previous prime is 2556847133. The next prime is 2556847151. The reversal of 2556847149 is 9417486552.

It is not a de Polignac number, because 2556847149 - 2⁴ = 2556847133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556847159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31164 + ... + 78005.

It is an arithmetic number, because the mean of its divisors is an integer number (219868380).

Almost surely, 2^2556847149 is an apocalyptic number.

It is an amenable number.

2556847149 is a deficient number, since it is larger than the sum of its proper divisors (961046931).

2556847149 is a wasteful number, since it uses less digits than its factorization.

2556847149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109420.

The product of its digits is 2419200, while the sum is 51.

The square root of 2556847149 is about 50565.2761190918. The cubic root of 2556847149 is about 1367.4189329491.

The spelling of 2556847149 in words is "two billion, five hundred fifty-six million, eight hundred forty-seven thousand, one hundred forty-nine".