162772538 has 4 divisors (see below), whose sum is σ = 244158810. Its totient is φ = 81386268.

The previous prime is 162772531. The next prime is 162772549. The reversal of 162772538 is 835277261.

162772538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88416409 + 74356129 = 9403^2 + 8623^2 .

It is a super-2 number, since 2×162772538² = 52989798253922888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162772495 and 162772504.

It is not an unprimeable number, because it can be changed into a prime (162772531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40693133 + ... + 40693136.

Almost surely, 2^162772538 is an apocalyptic number.

162772538 is a deficient number, since it is larger than the sum of its proper divisors (81386272).

162772538 is an equidigital number, since it uses as much as digits as its factorization.

162772538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81386271.

The product of its digits is 141120, while the sum is 41.

The square root of 162772538 is about 12758.2341254580. The cubic root of 162772538 is about 546.0013439925.

It can be divided in two parts, 16277253 and 8, that added together give a palindrome (16277261).

The spelling of 162772538 in words is "one hundred sixty-two million, seven hundred seventy-two thousand, five hundred thirty-eight".