162879237889 has 9 divisors (see below), whose sum is σ = 163814000259. Its totient is φ = 161949786240.

The previous prime is 162879237877. The next prime is 162879237893. The reversal of 162879237889 is 988732978261.

The square root of 162879237889 is 403583.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 154132225 + 162725105664 = 12415^2 + 403392^2 .

It is not a de Polignac number, because 162879237889 - 2⁹ = 162879237377 is a prime.

It is a super-2 number, since 2×162879237889² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (146313216) is a multiple of the sum of its prime divisors (2304).

It is not an unprimeable number, because it can be changed into a prime (162879237589) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77083297 + ... + 77085409.

Almost surely, 2^162879237889 is an apocalyptic number.

162879237889 is the 403583-rd square number.

162879237889 is the 201792-nd centered octagonal number.

It is an amenable number.

162879237889 is a deficient number, since it is larger than the sum of its proper divisors (934762370).

162879237889 is an frugal number, since it uses more digits than its factorization.

162879237889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608 (or 2304 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 70.

It can be divided in two parts, 1628792 and 37889, that added together give a square (1666681 = 1291²).

The spelling of 162879237889 in words is "one hundred sixty-two billion, eight hundred seventy-nine million, two hundred thirty-seven thousand, eight hundred eighty-nine".