2516749894 has 16 divisors (see below), whose sum is σ = 3794317776. Its totient is φ = 1251993600.

The previous prime is 2516749883. The next prime is 2516749903. The reversal of 2516749894 is 4989476152.

It is a super-2 number, since 2×2516749894² = 12668060057898022472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341254 + ... + 348550.

It is an arithmetic number, because the mean of its divisors is an integer number (237144861).

Almost surely, 2^2516749894 is an apocalyptic number.

2516749894 is a deficient number, since it is larger than the sum of its proper divisors (1277567882).

2516749894 is a wasteful number, since it uses less digits than its factorization.

2516749894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151.

The product of its digits is 4354560, while the sum is 55.

The square root of 2516749894 is about 50167.2193170002. The cubic root of 2516749894 is about 1360.2331445021.

The spelling of 2516749894 in words is "two billion, five hundred sixteen million, seven hundred forty-nine thousand, eight hundred ninety-four".