157430818 has 4 divisors (see below), whose sum is σ = 236146230. Its totient is φ = 78715408.

The previous prime is 157430743. The next prime is 157430839. The reversal of 157430818 is 818034751.

157430818 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 818034751 = 1123 ⋅728437.

It can be written as a sum of positive squares in only one way, i.e., 79691329 + 77739489 = 8927^2 + 8817^2 .

It is a super-2 number, since 2×157430818² = 49568924912298248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39357703 + ... + 39357706.

Almost surely, 2^157430818 is an apocalyptic number.

157430818 is a deficient number, since it is larger than the sum of its proper divisors (78715412).

157430818 is an equidigital number, since it uses as much as digits as its factorization.

157430818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78715411.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 157430818 is about 12547.1438184154. The cubic root of 157430818 is about 539.9620663797.

The spelling of 157430818 in words is "one hundred fifty-seven million, four hundred thirty thousand, eight hundred eighteen".