7922878998 has 32 divisors (see below), whose sum is σ = 16000880640. Its totient is φ = 2615185440.

The previous prime is 7922878993. The next prime is 7922879009. The reversal of 7922878998 is 8998782297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7922878993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402633 + ... + 421851.

It is an arithmetic number, because the mean of its divisors is an integer number (500027520).

Almost surely, 2^7922878998 is an apocalyptic number.

7922878998 is an abundant number, since it is smaller than the sum of its proper divisors (8078001642).

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

7922878998 is a wasteful number, since it uses less digits than its factorization.

7922878998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19892.

The product of its digits is 73156608, while the sum is 69.

The square root of 7922878998 is about 89010.5555425872. Note that the first 4 decimals coincide. The cubic root of 7922878998 is about 1993.5524869566.

The spelling of 7922878998 in words is "seven billion, nine hundred twenty-two million, eight hundred seventy-eight thousand, nine hundred ninety-eight".