157389869 has 24 divisors (see below), whose sum is σ = 195953472. Its totient is φ = 123776640.

The previous prime is 157389853. The next prime is 157389877. The reversal of 157389869 is 968983751.

It is not a de Polignac number, because 157389869 - 2⁴ = 157389853 is a prime.

It is a super-2 number, since 2×157389869² = 49543141727674322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157386869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275354 + ... + 275924.

It is an arithmetic number, because the mean of its divisors is an integer number (8164728).

Almost surely, 2^157389869 is an apocalyptic number.

It is an amenable number.

157389869 is a deficient number, since it is larger than the sum of its proper divisors (38563603).

157389869 is a wasteful number, since it uses less digits than its factorization.

157389869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 824 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 56.

The square root of 157389869 is about 12545.5119066541. The cubic root of 157389869 is about 539.9152461863.

The spelling of 157389869 in words is "one hundred fifty-seven million, three hundred eighty-nine thousand, eight hundred sixty-nine".