187112531887 has 2 divisors, whose sum is σ = 187112531888. Its totient is φ = 187112531886.

The previous prime is 187112531873. The next prime is 187112531899. The reversal of 187112531887 is 788135211781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 187112531887 - 2²³ = 187104143279 is a prime.

It is a super-2 number, since 2×187112531887² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187112531807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93556265943 + 93556265944.

It is an arithmetic number, because the mean of its divisors is an integer number (93556265944).

Almost surely, 2^187112531887 is an apocalyptic number.

187112531887 is a deficient number, since it is larger than the sum of its proper divisors (1).

187112531887 is an equidigital number, since it uses as much as digits as its factorization.

187112531887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 52.

The spelling of 187112531887 in words is "one hundred eighty-seven billion, one hundred twelve million, five hundred thirty-one thousand, eight hundred eighty-seven".