157791863 has 4 divisors (see below), whose sum is σ = 158452320. Its totient is φ = 157131408.

The previous prime is 157791839. The next prime is 157791869. The reversal of 157791863 is 368197751.

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 157791863 - 2¹² = 157787767 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 (157791869) 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, 329870 + ... + 330347.

It is an arithmetic number, because the mean of its divisors is an integer number (39613080).

Almost surely, 2^157791863 is an apocalyptic number.

157791863 is a deficient number, since it is larger than the sum of its proper divisors (660457).

157791863 is an equidigital number, since it uses as much as digits as its factorization.

157791863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660456.

The product of its digits is 317520, while the sum is 47.

The square root of 157791863 is about 12561.5231162467. The cubic root of 157791863 is about 540.3745264175.

The spelling of 157791863 in words is "one hundred fifty-seven million, seven hundred ninety-one thousand, eight hundred sixty-three".