157878379 has 4 divisors (see below), whose sum is σ = 157927000. Its totient is φ = 157829760.

The previous prime is 157878359. The next prime is 157878401. The reversal of 157878379 is 973878751.

It is a happy number.

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 157878379 - 2¹³ = 157870187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157878359) 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, 19062 + ... + 26059.

It is an arithmetic number, because the mean of its divisors is an integer number (39481750).

Almost surely, 2^157878379 is an apocalyptic number.

157878379 is a deficient number, since it is larger than the sum of its proper divisors (48621).

157878379 is an equidigital number, since it uses as much as digits as its factorization.

157878379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48620.

The product of its digits is 2963520, while the sum is 55.

The square root of 157878379 is about 12564.9663350126. The cubic root of 157878379 is about 540.4732693645.

The spelling of 157878379 in words is "one hundred fifty-seven million, eight hundred seventy-eight thousand, three hundred seventy-nine".