1187990520192 has 160 divisors (see below), whose sum is σ = 4040503719120. Its totient is φ = 339425842176.

The previous prime is 1187990520109. The next prime is 1187990520193. The reversal of 1187990520192 is 2910250997811.

It is a happy number.

1187990520192 is a `hidden beast` number, since 1 + 18 + 7 + 9 + 90 + 520 + 19 + 2 = 666.

It is a super-2 number, since 2×1187990520192² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187990520193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8111883 + ... + 8257034.

Almost surely, 2^{1187990520192} is an apocalyptic number.

1187990520192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1187990520192 is an abundant number, since it is smaller than the sum of its proper divisors (2852513198928).

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

1187990520192 is an equidigital number, since it uses as much as digits as its factorization.

1187990520192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16368950 (or 16368929 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 54.

The spelling of 1187990520192 in words is "one trillion, one hundred eighty-seven billion, nine hundred ninety million, five hundred twenty thousand, one hundred ninety-two".