11731889188 has 36 divisors (see below), whose sum is σ = 21713689872. Its totient is φ = 5545557360.

The previous prime is 11731889179. The next prime is 11731889251. The reversal of 11731889188 is 88198813711.

It is a super-2 number, since 2×11731889188² (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 11 ways as a sum of consecutive naturals, for example, 700731 + ... + 717277.

It is an arithmetic number, because the mean of its divisors is an integer number (603158052).

Almost surely, 2^11731889188 is an apocalyptic number.

It is an amenable number.

11731889188 is a deficient number, since it is larger than the sum of its proper divisors (9981800684).

11731889188 is a wasteful number, since it uses less digits than its factorization.

11731889188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17080 (or 17059 counting only the distinct ones).

The product of its digits is 774144, while the sum is 55.

The spelling of 11731889188 in words is "eleven billion, seven hundred thirty-one million, eight hundred eighty-nine thousand, one hundred eighty-eight".