157307386 has 4 divisors (see below), whose sum is σ = 235961082. Its totient is φ = 78653692.

The previous prime is 157307369. The next prime is 157307389. The reversal of 157307386 is 683703751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683703751 = 367 ⋅1862953.

It can be written as a sum of positive squares in only one way, i.e., 100380361 + 56927025 = 10019^2 + 7545^2 .

It is a super-2 number, since 2×157307386² = 49491227380305992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157307389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39326845 + ... + 39326848.

Almost surely, 2^157307386 is an apocalyptic number.

157307386 is a deficient number, since it is larger than the sum of its proper divisors (78653696).

157307386 is an equidigital number, since it uses as much as digits as its factorization.

157307386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78653695.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 157307386 is about 12542.2241249310. The cubic root of 157307386 is about 539.8209122639.

The spelling of 157307386 in words is "one hundred fifty-seven million, three hundred seven thousand, three hundred eighty-six".