157638170 has 8 divisors (see below), whose sum is σ = 283748724. Its totient is φ = 63055264.

The previous prime is 157638163. The next prime is 157638179. The reversal of 157638170 is 71836751.

157638170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 153784801 + 3853369 = 12401^2 + 1963^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157638179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7881899 + ... + 7881918.

Almost surely, 2^157638170 is an apocalyptic number.

157638170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157638170 is a deficient number, since it is larger than the sum of its proper divisors (126110554).

157638170 is a wasteful number, since it uses less digits than its factorization.

157638170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15763824.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 157638170 is about 12555.4040158013. The cubic root of 157638170 is about 540.1990235749.

The spelling of 157638170 in words is "one hundred fifty-seven million, six hundred thirty-eight thousand, one hundred seventy".