187138240159 has 16 divisors (see below), whose sum is σ = 212215722880. Its totient is φ = 163593237600.

The previous prime is 187138240151. The next prime is 187138240181. The reversal of 187138240159 is 951042831781.

It is not a de Polignac number, because 187138240159 - 2³ = 187138240151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187138240151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571324 + ... + 837070.

It is an arithmetic number, because the mean of its divisors is an integer number (13263482680).

Almost surely, 2^187138240159 is an apocalyptic number.

187138240159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

187138240159 is a deficient number, since it is larger than the sum of its proper divisors (25077482721).

187138240159 is a wasteful number, since it uses less digits than its factorization.

187138240159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268630.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 187138240159 in words is "one hundred eighty-seven billion, one hundred thirty-eight million, two hundred forty thousand, one hundred fifty-nine".