162257138 has 8 divisors (see below), whose sum is σ = 245895132. Its totient is φ = 80292096.

The previous prime is 162257119. The next prime is 162257141. The reversal of 162257138 is 831752261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 151609969 + 10647169 = 12313^2 + 3263^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 162257098 and 162257107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417995 + ... + 418382.

Almost surely, 2^162257138 is an apocalyptic number.

162257138 is a deficient number, since it is larger than the sum of its proper divisors (83637994).

162257138 is an equidigital number, since it uses as much as digits as its factorization.

162257138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836476.

The product of its digits is 20160, while the sum is 35.

The square root of 162257138 is about 12738.0193907844. The cubic root of 162257138 is about 545.4244517724.

The spelling of 162257138 in words is "one hundred sixty-two million, two hundred fifty-seven thousand, one hundred thirty-eight".