187387087 has 2 divisors, whose sum is σ = 187387088. Its totient is φ = 187387086.

The previous prime is 187387069. The next prime is 187387091. The reversal of 187387087 is 780783781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 187387087 - 2¹¹ = 187385039 is a prime.

It is a super-2 number, since 2×187387087² = 70227840748691138, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187387087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187387027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93693543 + 93693544.

It is an arithmetic number, because the mean of its divisors is an integer number (93693544).

Almost surely, 2^187387087 is an apocalyptic number.

187387087 is a deficient number, since it is larger than the sum of its proper divisors (1).

187387087 is an equidigital number, since it uses as much as digits as its factorization.

187387087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 49.

The square root of 187387087 is about 13688.9403169128. The cubic root of 187387087 is about 572.2422065447.

The spelling of 187387087 in words is "one hundred eighty-seven million, three hundred eighty-seven thousand, eighty-seven".