2591999998 has 32 divisors (see below), whose sum is σ = 4596480000. Its totient is φ = 1073028384.

The previous prime is 2591999987. The next prime is 2592000031. The reversal of 2591999998 is 8999991952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54003 + ... + 90001.

It is an arithmetic number, because the mean of its divisors is an integer number (143640000).

Almost surely, 2^2591999998 is an apocalyptic number.

2591999998 is a deficient number, since it is larger than the sum of its proper divisors (2004480002).

2591999998 is a wasteful number, since it uses less digits than its factorization.

2591999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36184.

The product of its digits is 42515280, while the sum is 70.

The square root of 2591999998 is about 50911.6882257896. The cubic root of 2591999998 is about 1373.6570907107.

The spelling of 2591999998 in words is "two billion, five hundred ninety-one million, nine hundred ninety-nine thousand, nine hundred ninety-eight".