7974155516 has 6 divisors (see below), whose sum is σ = 13954772160. Its totient is φ = 3987077756.

The previous prime is 7974155489. The next prime is 7974155557. The reversal of 7974155516 is 6155514797.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996769436 + ... + 996769443.

It is an arithmetic number, because the mean of its divisors is an integer number (2325795360).

Almost surely, 2^7974155516 is an apocalyptic number.

It is an amenable number.

7974155516 is a deficient number, since it is larger than the sum of its proper divisors (5980616644).

7974155516 is a wasteful number, since it uses less digits than its factorization.

7974155516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993538883 (or 1993538881 counting only the distinct ones).

The product of its digits is 1323000, while the sum is 50.

The square root of 7974155516 is about 89298.1271696109. The cubic root of 7974155516 is about 1997.8439696016.

The spelling of 7974155516 in words is "seven billion, nine hundred seventy-four million, one hundred fifty-five thousand, five hundred sixteen".