1198156178364 has 24 divisors (see below), whose sum is σ = 2796470783568. Its totient is φ = 399274959360.

The previous prime is 1198156178327. The next prime is 1198156178377. The reversal of 1198156178364 is 4638716518911.

It is a junction number, because it is equal to n+sod(n) for n = 1198156178298 and 1198156178307.

It is a congruent number.

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, 13758967 + ... + 13845774.

It is an arithmetic number, because the mean of its divisors is an integer number (116519615982).

Almost surely, 2^{1198156178364} is an apocalyptic number.

It is an amenable number.

1198156178364 is an abundant number, since it is smaller than the sum of its proper divisors (1598314605204).

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

1198156178364 is a wasteful number, since it uses less digits than its factorization.

1198156178364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27608365 (or 27608363 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 60.

The spelling of 1198156178364 in words is "one trillion, one hundred ninety-eight billion, one hundred fifty-six million, one hundred seventy-eight thousand, three hundred sixty-four".