7974891616 has 48 divisors (see below), whose sum is σ = 15825904416. Its totient is φ = 3955700736.

The previous prime is 7974891601. The next prime is 7974891667. The reversal of 7974891616 is 6161984797.

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, 5510605 + ... + 5512051.

It is an arithmetic number, because the mean of its divisors is an integer number (329706342).

Almost surely, 2^7974891616 is an apocalyptic number.

It is an amenable number.

7974891616 is a deficient number, since it is larger than the sum of its proper divisors (7851012800).

7974891616 is a wasteful number, since it uses less digits than its factorization.

7974891616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2703 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 58.

The square root of 7974891616 is about 89302.2486614979. The cubic root of 7974891616 is about 1997.9054418455.

The spelling of 7974891616 in words is "seven billion, nine hundred seventy-four million, eight hundred ninety-one thousand, six hundred sixteen".