157491434 has 16 divisors (see below), whose sum is σ = 250403400. Its totient is φ = 74033664.

The previous prime is 157491427. The next prime is 157491443. The reversal of 157491434 is 434194751.

157491434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 146289025 + 11202409 = 12095^2 + 3347^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39902 + ... + 43670.

Almost surely, 2^157491434 is an apocalyptic number.

157491434 is a deficient number, since it is larger than the sum of its proper divisors (92911966).

157491434 is a wasteful number, since it uses less digits than its factorization.

157491434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017.

The product of its digits is 60480, while the sum is 38.

The square root of 157491434 is about 12549.5591157618. The cubic root of 157491434 is about 540.0313584899.

The spelling of 157491434 in words is "one hundred fifty-seven million, four hundred ninety-one thousand, four hundred thirty-four".