7791878292 has 96 divisors (see below), whose sum is σ = 20378179584. Its totient is φ = 2296723200.

The previous prime is 7791878287. The next prime is 7791878299. The reversal of 7791878292 is 2928781977.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7791878299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1984243 + ... + 1988165.

It is an arithmetic number, because the mean of its divisors is an integer number (212272704).

Almost surely, 2^7791878292 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 7791878292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10189089792).

7791878292 is an abundant number, since it is smaller than the sum of its proper divisors (12586301292).

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

7791878292 is a wasteful number, since it uses less digits than its factorization.

7791878292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349 (or 4347 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 60.

The square root of 7791878292 is about 88271.6165706735. The cubic root of 7791878292 is about 1982.5039141381.

The spelling of 7791878292 in words is "seven billion, seven hundred ninety-one million, eight hundred seventy-eight thousand, two hundred ninety-two".