157893639 has 16 divisors (see below), whose sum is σ = 214781952. Its totient is φ = 103154688.

The previous prime is 157893623. The next prime is 157893641. The reversal of 157893639 is 936398751.

It is not a de Polignac number, because 157893639 - 2⁴ = 157893623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157893591 and 157893600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157893839) 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, 29127 + ... + 34119.

It is an arithmetic number, because the mean of its divisors is an integer number (13423872).

Almost surely, 2^157893639 is an apocalyptic number.

157893639 is a deficient number, since it is larger than the sum of its proper divisors (56888313).

157893639 is a wasteful number, since it uses less digits than its factorization.

157893639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206.

The product of its digits is 1224720, while the sum is 51.

The square root of 157893639 is about 12565.5735643066. The cubic root of 157893639 is about 540.4906822542.

The spelling of 157893639 in words is "one hundred fifty-seven million, eight hundred ninety-three thousand, six hundred thirty-nine".