2534391865 has 16 divisors (see below), whose sum is σ = 3080226240. Its totient is φ = 2001706560.

The previous prime is 2534391829. The next prime is 2534391901. The reversal of 2534391865 is 5681934352.

It is an interprime number because it is at equal distance from previous prime (2534391829) and next prime (2534391901).

It is not a de Polignac number, because 2534391865 - 2⁷ = 2534391737 is a prime.

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, 115722 + ... + 135868.

It is an arithmetic number, because the mean of its divisors is an integer number (192514140).

Almost surely, 2^2534391865 is an apocalyptic number.

It is an amenable number.

2534391865 is a deficient number, since it is larger than the sum of its proper divisors (545834375).

2534391865 is a wasteful number, since it uses less digits than its factorization.

2534391865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472.

The product of its digits is 777600, while the sum is 46.

The square root of 2534391865 is about 50342.7439160799. The cubic root of 2534391865 is about 1363.4040779175.

The spelling of 2534391865 in words is "two billion, five hundred thirty-four million, three hundred ninety-one thousand, eight hundred sixty-five".