1187165232018 has 24 divisors (see below), whose sum is σ = 2575185771600. Its totient is φ = 395261061624.

The previous prime is 1187165231971. The next prime is 1187165232101. The reversal of 1187165232018 is 8102325617811.

1187165232018 is a `hidden beast` number, since 1 + 1 + 87 + 16 + 523 + 20 + 18 = 666.

It is a super-2 number, since 2×1187165232018² (a number of 25 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, 38374308 + ... + 38405231.

It is an arithmetic number, because the mean of its divisors is an integer number (107299407150).

Almost surely, 2^{1187165232018} is an apocalyptic number.

1187165232018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1187165232018 is an abundant number, since it is smaller than the sum of its proper divisors (1388020539582).

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

1187165232018 is a wasteful number, since it uses less digits than its factorization.

1187165232018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76780406 (or 76780403 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 1187165232018 in words is "one trillion, one hundred eighty-seven billion, one hundred sixty-five million, two hundred thirty-two thousand, eighteen".