7898074155 has 32 divisors (see below), whose sum is σ = 14383494720. Its totient is φ = 4109564160.

The previous prime is 7898074153. The next prime is 7898074169. The reversal of 7898074155 is 5514708987.

7898074155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7898074155 - 2¹ = 7898074153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7898074153) 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, 707932 + ... + 719001.

It is an arithmetic number, because the mean of its divisors is an integer number (449484210).

Almost surely, 2^7898074155 is an apocalyptic number.

7898074155 is a deficient number, since it is larger than the sum of its proper divisors (6485420565).

7898074155 is a wasteful number, since it uses less digits than its factorization.

7898074155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426988 (or 1426982 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The square root of 7898074155 is about 88871.1097882771. The cubic root of 7898074155 is about 1991.4698495738.

The spelling of 7898074155 in words is "seven billion, eight hundred ninety-eight million, seventy-four thousand, one hundred fifty-five".