157388146 has 8 divisors (see below), whose sum is σ = 239316444. Its totient is φ = 77616000.

The previous prime is 157388131. The next prime is 157388167. The reversal of 157388146 is 641883751.

It can be written as a sum of positive squares in 2 ways, for example, as 154629225 + 2758921 = 12435^2 + 1661^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 538855 + ... + 539146.

Almost surely, 2^157388146 is an apocalyptic number.

157388146 is a deficient number, since it is larger than the sum of its proper divisors (81928298).

157388146 is a wasteful number, since it uses less digits than its factorization.

157388146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078076.

The product of its digits is 161280, while the sum is 43.

The square root of 157388146 is about 12545.4432364903. The cubic root of 157388146 is about 539.9132759677.

The spelling of 157388146 in words is "one hundred fifty-seven million, three hundred eighty-eight thousand, one hundred forty-six".