162189738 has 48 divisors (see below), whose sum is σ = 371217600. Its totient is φ = 51036480.

The previous prime is 162189701. The next prime is 162189743. The reversal of 162189738 is 837981261.

162189738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×162189738² = 52611022225017288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162189693 and 162189702.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122118 + ... + 123438.

It is an arithmetic number, because the mean of its divisors is an integer number (7733700).

Almost surely, 2^162189738 is an apocalyptic number.

162189738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 162189738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185608800).

162189738 is an abundant number, since it is smaller than the sum of its proper divisors (209027862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162189738 is a wasteful number, since it uses less digits than its factorization.

162189738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707 (or 1704 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 162189738 is about 12735.3734927563. The cubic root of 162189738 is about 545.3489200170.

The spelling of 162189738 in words is "one hundred sixty-two million, one hundred eighty-nine thousand, seven hundred thirty-eight".