7917015492 has 120 divisors (see below), whose sum is σ = 21096378072. Its totient is φ = 2588544000.

The previous prime is 7917015473. The next prime is 7917015497. The reversal of 7917015492 is 2945107197.

7917015492 is a `hidden beast` number, since 7 + 91 + 70 + 1 + 5 + 492 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2854123776 + 5062891716 = 53424^2 + 71154^2 .

It is not an unprimeable number, because it can be changed into a prime (7917015497) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3696742 + ... + 3698882.

Almost surely, 2^7917015492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7917015492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10548189036).

7917015492 is an abundant number, since it is smaller than the sum of its proper divisors (13179362580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7917015492 is a wasteful number, since it uses less digits than its factorization.

7917015492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2360 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 7917015492 is about 88977.6123078159. The cubic root of 7917015492 is about 1993.0605743670.

The spelling of 7917015492 in words is "seven billion, nine hundred seventeen million, fifteen thousand, four hundred ninety-two".