7871963898 has 16 divisors (see below), whose sum is σ = 15767329536. Its totient is φ = 2620087680.

The previous prime is 7871963881. The next prime is 7871963909. The reversal of 7871963898 is 8983691787.

It is a super-2 number, since 2×7871963898² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970698 + ... + 978773.

It is an arithmetic number, because the mean of its divisors is an integer number (985458096).

Almost surely, 2^7871963898 is an apocalyptic number.

7871963898 is an abundant number, since it is smaller than the sum of its proper divisors (7895365638).

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

7871963898 is a wasteful number, since it uses less digits than its factorization.

7871963898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950149.

The product of its digits is 36578304, while the sum is 66.

The square root of 7871963898 is about 88724.0886005599. The cubic root of 7871963898 is about 1989.2728922781.

The spelling of 7871963898 in words is "seven billion, eight hundred seventy-one million, nine hundred sixty-three thousand, eight hundred ninety-eight".