157968274 has 4 divisors (see below), whose sum is σ = 236952414. Its totient is φ = 78984136.

The previous prime is 157968271. The next prime is 157968323. The reversal of 157968274 is 472869751.

157968274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 152646025 + 5322249 = 12355^2 + 2307^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (157968271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39492067 + ... + 39492070.

Almost surely, 2^157968274 is an apocalyptic number.

157968274 is a deficient number, since it is larger than the sum of its proper divisors (78984140).

157968274 is an equidigital number, since it uses as much as digits as its factorization.

157968274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78984139.

The product of its digits is 846720, while the sum is 49.

The square root of 157968274 is about 12568.5430340991. The cubic root of 157968274 is about 540.5758306447.

The spelling of 157968274 in words is "one hundred fifty-seven million, nine hundred sixty-eight thousand, two hundred seventy-four".