162865138 has 8 divisors (see below), whose sum is σ = 244351980. Its totient is φ = 81414480.

The previous prime is 162865133. The next prime is 162865147. The reversal of 162865138 is 831568261.

It can be written as a sum of positive squares in 2 ways, for example, as 115627009 + 47238129 = 10753^2 + 6873^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 162865138.

It is not an unprimeable number, because it can be changed into a prime (162865133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12028 + ... + 21688.

Almost surely, 2^162865138 is an apocalyptic number.

162865138 is a deficient number, since it is larger than the sum of its proper divisors (81486842).

162865138 is an equidigital number, since it uses as much as digits as its factorization.

162865138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18092.

The product of its digits is 69120, while the sum is 40.

The square root of 162865138 is about 12761.8626383455. The cubic root of 162865138 is about 546.1048629695.

It can be divided in two parts, 1628 and 65138, that added together give a palindrome (66766).

The spelling of 162865138 in words is "one hundred sixty-two million, eight hundred sixty-five thousand, one hundred thirty-eight".