162439318637 has 4 divisors (see below), whose sum is σ = 170988756480. Its totient is φ = 153889880796.

The previous prime is 162439318583. The next prime is 162439318649. The reversal of 162439318637 is 736813934261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 736813934261 = 17 ⋅43341996133.

It is a cyclic number.

It is not a de Polignac number, because 162439318637 - 2¹⁴ = 162439302253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162439311637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4274718893 + ... + 4274718930.

It is an arithmetic number, because the mean of its divisors is an integer number (42747189120).

Almost surely, 2^162439318637 is an apocalyptic number.

It is an amenable number.

162439318637 is a deficient number, since it is larger than the sum of its proper divisors (8549437843).

162439318637 is an equidigital number, since it uses as much as digits as its factorization.

162439318637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8549437842.

The product of its digits is 3919104, while the sum is 53.

The spelling of 162439318637 in words is "one hundred sixty-two billion, four hundred thirty-nine million, three hundred eighteen thousand, six hundred thirty-seven".