162138171 has 32 divisors (see below), whose sum is σ = 237432832. Its totient is φ = 97822080.

The previous prime is 162138169. The next prime is 162138173. The reversal of 162138171 is 171831261.

It is an interprime number because it is at equal distance from previous prime (162138169) and next prime (162138173).

It is not a de Polignac number, because 162138171 - 2¹ = 162138169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (162138173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726966 + ... + 727188.

It is an arithmetic number, because the mean of its divisors is an integer number (7419776).

Almost surely, 2^162138171 is an apocalyptic number.

162138171 is a deficient number, since it is larger than the sum of its proper divisors (75294661).

162138171 is a wasteful number, since it uses less digits than its factorization.

162138171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its digits is 2016, while the sum is 30.

The square root of 162138171 is about 12733.3487739871. The cubic root of 162138171 is about 545.2911173697.

The spelling of 162138171 in words is "one hundred sixty-two million, one hundred thirty-eight thousand, one hundred seventy-one".