2598779243 has 4 divisors (see below), whose sum is σ = 2598906768. Its totient is φ = 2598651720.

The previous prime is 2598779237. The next prime is 2598779251. The reversal of 2598779243 is 3429778952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2598779243 - 2³⁰ = 1525037419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2598779213) 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, 25568 + ... + 76493.

It is an arithmetic number, because the mean of its divisors is an integer number (649726692).

Almost surely, 2^2598779243 is an apocalyptic number.

2598779243 is a deficient number, since it is larger than the sum of its proper divisors (127525).

2598779243 is a wasteful number, since it uses less digits than its factorization.

2598779243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127524.

The product of its digits is 7620480, while the sum is 56.

The square root of 2598779243 is about 50978.2232232548. The cubic root of 2598779243 is about 1374.8536250574.

The spelling of 2598779243 in words is "two billion, five hundred ninety-eight million, seven hundred seventy-nine thousand, two hundred forty-three".