157019474 has 4 divisors (see below), whose sum is σ = 235529214. Its totient is φ = 78509736.

The previous prime is 157019431. The next prime is 157019479. The reversal of 157019474 is 474910751.

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., 131446225 + 25573249 = 11465^2 + 5057^2 .

It is not an unprimeable number, because it can be changed into a prime (157019479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39254867 + ... + 39254870.

Almost surely, 2^157019474 is an apocalyptic number.

157019474 is a deficient number, since it is larger than the sum of its proper divisors (78509740).

157019474 is an equidigital number, since it uses as much as digits as its factorization.

157019474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78509739.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 157019474 is about 12530.7411592451. The cubic root of 157019474 is about 539.4913752160.

The spelling of 157019474 in words is "one hundred fifty-seven million, nineteen thousand, four hundred seventy-four".