157389615 has 16 divisors (see below), whose sum is σ = 279804000. Its totient is φ = 83941056.

The previous prime is 157389607. The next prime is 157389619. The reversal of 157389615 is 516983751.

It is a happy number.

157389615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157389615 - 2³ = 157389607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157389619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582790 + ... + 583059.

It is an arithmetic number, because the mean of its divisors is an integer number (17487750).

Almost surely, 2^157389615 is an apocalyptic number.

157389615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157389615 is a deficient number, since it is larger than the sum of its proper divisors (122414385).

157389615 is a wasteful number, since it uses less digits than its factorization.

157389615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165863 (or 1165857 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 157389615 is about 12545.5017835079. The cubic root of 157389615 is about 539.9149557429.

The spelling of 157389615 in words is "one hundred fifty-seven million, three hundred eighty-nine thousand, six hundred fifteen".