2639125398 has 48 divisors (see below), whose sum is σ = 6612323760. Its totient is φ = 696032064.

The previous prime is 2639125397. The next prime is 2639125417. The reversal of 2639125398 is 8935219362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639125397) 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 23 ways as a sum of consecutive naturals, for example, 341433 + ... + 349076.

It is an arithmetic number, because the mean of its divisors is an integer number (137756745).

Almost surely, 2^2639125398 is an apocalyptic number.

2639125398 is an abundant number, since it is smaller than the sum of its proper divisors (3973198362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2639125398 is a wasteful number, since it uses less digits than its factorization.

2639125398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690541 (or 690534 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 2639125398 is about 51372.4186504782. The cubic root of 2639125398 is about 1381.9320061658.

The spelling of 2639125398 in words is "two billion, six hundred thirty-nine million, one hundred twenty-five thousand, three hundred ninety-eight".