157448378 has 4 divisors (see below), whose sum is σ = 236172570. Its totient is φ = 78724188.

The previous prime is 157448359. The next prime is 157448399. The reversal of 157448378 is 873844751.

It is a happy number.

157448378 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., 150724729 + 6723649 = 12277^2 + 2593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39362093 + ... + 39362096.

Almost surely, 2^157448378 is an apocalyptic number.

157448378 is a deficient number, since it is larger than the sum of its proper divisors (78724192).

157448378 is an equidigital number, since it uses as much as digits as its factorization.

157448378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78724191.

The product of its digits is 752640, while the sum is 47.

The square root of 157448378 is about 12547.8435597516. The cubic root of 157448378 is about 539.9821416133.

The spelling of 157448378 in words is "one hundred fifty-seven million, four hundred forty-eight thousand, three hundred seventy-eight".