187145889157 has 8 divisors (see below), whose sum is σ = 190925916480. Its totient is φ = 183386130720.

The previous prime is 187145889149. The next prime is 187145889169. The reversal of 187145889157 is 751988541781.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187145889157 - 2³ = 187145889149 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 (187145889197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5048569 + ... + 5085502.

It is an arithmetic number, because the mean of its divisors is an integer number (23865739560).

Almost surely, 2^187145889157 is an apocalyptic number.

It is an amenable number.

187145889157 is a deficient number, since it is larger than the sum of its proper divisors (3780027323).

187145889157 is a wasteful number, since it uses less digits than its factorization.

187145889157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134443.

The product of its digits is 22579200, while the sum is 64.

The spelling of 187145889157 in words is "one hundred eighty-seven billion, one hundred forty-five million, eight hundred eighty-nine thousand, one hundred fifty-seven".