162166538 has 16 divisors (see below), whose sum is σ = 248246856. Its totient is φ = 79422720.

The previous prime is 162166531. The next prime is 162166541. The reversal of 162166538 is 835661261.

162166538 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 4 ways, for example, as 162129289 + 37249 = 12733^2 + 193^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (162166531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108758 + ... + 110238.

Almost surely, 2^162166538 is an apocalyptic number.

162166538 is a deficient number, since it is larger than the sum of its proper divisors (86080318).

162166538 is a wasteful number, since it uses less digits than its factorization.

162166538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569.

The product of its digits is 51840, while the sum is 38.

The square root of 162166538 is about 12734.4626113551. The cubic root of 162166538 is about 545.3229161148.

The spelling of 162166538 in words is "one hundred sixty-two million, one hundred sixty-six thousand, five hundred thirty-eight".