157981894 has 16 divisors (see below), whose sum is σ = 282601728. Its totient is φ = 64762632.

The previous prime is 157981891. The next prime is 157981907. The reversal of 157981894 is 498189751.

157981894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157981891) 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, 244992 + ... + 245635.

It is an arithmetic number, because the mean of its divisors is an integer number (17662608).

Almost surely, 2^157981894 is an apocalyptic number.

157981894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

157981894 is a deficient number, since it is larger than the sum of its proper divisors (124619834).

157981894 is a wasteful number, since it uses less digits than its factorization.

157981894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490659.

The product of its digits is 725760, while the sum is 52.

The square root of 157981894 is about 12569.0848513327. The cubic root of 157981894 is about 540.5913663195.

The spelling of 157981894 in words is "one hundred fifty-seven million, nine hundred eighty-one thousand, eight hundred ninety-four".