187342889 has 16 divisors (see below), whose sum is σ = 203833344. Its totient is φ = 171666000.

The previous prime is 187342867. The next prime is 187342901. The reversal of 187342889 is 988243781.

It is a cyclic number.

It is not a de Polignac number, because 187342889 - 2¹⁶ = 187277353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187342829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72164 + ... + 74714.

It is an arithmetic number, because the mean of its divisors is an integer number (12739584).

Almost surely, 2^187342889 is an apocalyptic number.

It is an amenable number.

187342889 is a deficient number, since it is larger than the sum of its proper divisors (16490455).

187342889 is a wasteful number, since it uses less digits than its factorization.

187342889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its digits is 774144, while the sum is 50.

The square root of 187342889 is about 13687.3258527734. The cubic root of 187342889 is about 572.1972124272.

The spelling of 187342889 in words is "one hundred eighty-seven million, three hundred forty-two thousand, eight hundred eighty-nine".