157249394 has 8 divisors (see below), whose sum is σ = 236435628. Its totient is φ = 78437520.

The previous prime is 157249381. The next prime is 157249423. The reversal of 157249394 is 493942751.

It can be written as a sum of positive squares in 2 ways, for example, as 137757169 + 19492225 = 11737^2 + 4415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92537 + ... + 94220.

Almost surely, 2^157249394 is an apocalyptic number.

157249394 is a deficient number, since it is larger than the sum of its proper divisors (79186234).

157249394 is a wasteful number, since it uses less digits than its factorization.

157249394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187180.

The product of its digits is 272160, while the sum is 44.

The square root of 157249394 is about 12539.9120411588. The cubic root of 157249394 is about 539.7545683943.

The spelling of 157249394 in words is "one hundred fifty-seven million, two hundred forty-nine thousand, three hundred ninety-four".