157151138 has 4 divisors (see below), whose sum is σ = 235726710. Its totient is φ = 78575568.

The previous prime is 157151123. The next prime is 157151153. The reversal of 157151138 is 831151751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (157151123) and next prime (157151153).

It can be written as a sum of positive squares in only one way, i.e., 137053849 + 20097289 = 11707^2 + 4483^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39287783 + ... + 39287786.

Almost surely, 2^157151138 is an apocalyptic number.

157151138 is a deficient number, since it is larger than the sum of its proper divisors (78575572).

157151138 is an equidigital number, since it uses as much as digits as its factorization.

157151138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78575571.

The product of its digits is 4200, while the sum is 32.

The square root of 157151138 is about 12535.9936981477. The cubic root of 157151138 is about 539.6421245595.

The spelling of 157151138 in words is "one hundred fifty-seven million, one hundred fifty-one thousand, one hundred thirty-eight".