11388396158 has 12 divisors (see below), whose sum is σ = 17634946848. Its totient is φ = 5510107680.

The previous prime is 11388396133. The next prime is 11388396209. The reversal of 11388396158 is 85169388311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 833510 + ... + 847062.

It is an arithmetic number, because the mean of its divisors is an integer number (1469578904).

Almost surely, 2^11388396158 is an apocalyptic number.

11388396158 is a deficient number, since it is larger than the sum of its proper divisors (6246550690).

11388396158 is an frugal number, since it uses more digits than its factorization.

11388396158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27139 (or 13586 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The spelling of 11388396158 in words is "eleven billion, three hundred eighty-eight million, three hundred ninety-six thousand, one hundred fifty-eight".