111649893192 has 384 divisors, whose sum is σ = 346934016000. Its totient is φ = 32217937920.

The previous prime is 111649893169. The next prime is 111649893293. The reversal of 111649893192 is 291398946111.

It is a happy number.

111649893192 is a `hidden beast` number, since 1 + 116 + 498 + 9 + 31 + 9 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 311002309 + ... + 311002667.

It is an arithmetic number, because the mean of its divisors is an integer number (903474000).

Almost surely, 2^111649893192 is an apocalyptic number.

111649893192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111649893192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173467008000).

111649893192 is an abundant number, since it is smaller than the sum of its proper divisors (235284122808).

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

111649893192 is a wasteful number, since it uses less digits than its factorization.

111649893192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 754 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The spelling of 111649893192 in words is "one hundred eleven billion, six hundred forty-nine million, eight hundred ninety-three thousand, one hundred ninety-two".