138160187 has 4 divisors (see below), whose sum is σ = 150720216. Its totient is φ = 125600160.

The previous prime is 138160171. The next prime is 138160261. The reversal of 138160187 is 781061831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138160187 - 2⁴ = 138160171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138160117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6279998 + ... + 6280019.

It is an arithmetic number, because the mean of its divisors is an integer number (37680054).

Almost surely, 2^138160187 is an apocalyptic number.

138160187 is a deficient number, since it is larger than the sum of its proper divisors (12560029).

138160187 is a wasteful number, since it uses less digits than its factorization.

138160187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12560028.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 138160187 is about 11754.1561585679. The cubic root of 138160187 is about 516.9647972519.

The spelling of 138160187 in words is "one hundred thirty-eight million, one hundred sixty thousand, one hundred eighty-seven".