1368155187 has 12 divisors (see below), whose sum is σ = 2258542000. Its totient is φ = 781802928.

The previous prime is 1368155167. The next prime is 1368155203. The reversal of 1368155187 is 7815518631.

1368155187 is a `hidden beast` number, since 13 + 6 + 8 + 1 + 551 + 87 = 666.

It is not a de Polignac number, because 1368155187 - 2¹⁰ = 1368154163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368155137) 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 11 ways as a sum of consecutive naturals, for example, 10858312 + ... + 10858437.

Almost surely, 2^1368155187 is an apocalyptic number.

1368155187 is a deficient number, since it is larger than the sum of its proper divisors (890386813).

1368155187 is a wasteful number, since it uses less digits than its factorization.

1368155187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21716762 (or 21716759 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 1368155187 is about 36988.5818462941. The cubic root of 1368155187 is about 1110.1417958618.

The spelling of 1368155187 in words is "one billion, three hundred sixty-eight million, one hundred fifty-five thousand, one hundred eighty-seven".