2597513139 has 72 divisors (see below), whose sum is σ = 4244700096. Its totient is φ = 1520870400.

The previous prime is 2597513131. The next prime is 2597513167. The reversal of 2597513139 is 9313157952.

2597513139 is a `hidden beast` number, since 2 + 597 + 51 + 3 + 1 + 3 + 9 = 666.

It is not a de Polignac number, because 2597513139 - 2³ = 2597513131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2597513094 and 2597513103.

It is not an unprimeable number, because it can be changed into a prime (2597513131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9243679 + ... + 9243959.

It is an arithmetic number, because the mean of its divisors is an integer number (58954168).

Almost surely, 2^2597513139 is an apocalyptic number.

2597513139 is a deficient number, since it is larger than the sum of its proper divisors (1647186957).

2597513139 is a wasteful number, since it uses less digits than its factorization.

2597513139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 385 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 2597513139 is about 50965.8036236063. The cubic root of 2597513139 is about 1374.6303163069.

The spelling of 2597513139 in words is "two billion, five hundred ninety-seven million, five hundred thirteen thousand, one hundred thirty-nine".