6922991898 has 24 divisors (see below), whose sum is σ = 15008741748. Its totient is φ = 2306290752.

The previous prime is 6922991863. The next prime is 6922991941. The reversal of 6922991898 is 8981992296.

6922991898 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6851369529 + 71622369 = 82773^2 + 8463^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83115 + ... + 144062.

Almost surely, 2^6922991898 is an apocalyptic number.

6922991898 is an abundant number, since it is smaller than the sum of its proper divisors (8085749850).

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

6922991898 is a wasteful number, since it uses less digits than its factorization.

6922991898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228878 (or 228875 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 6922991898 is about 83204.5184950914. The cubic root of 6922991898 is about 1905.8904816529.

The spelling of 6922991898 in words is "six billion, nine hundred twenty-two million, nine hundred ninety-one thousand, eight hundred ninety-eight".