162161623 has 16 divisors (see below), whose sum is σ = 185340960. Its totient is φ = 140553216.

The previous prime is 162161621. The next prime is 162161627. The reversal of 162161623 is 326161261.

It is a cyclic number.

It is not a de Polignac number, because 162161623 - 2¹ = 162161621 is a prime.

It is a super-3 number, since 3×162161623³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162161591 and 162161600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162161621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178336 + ... + 179242.

It is an arithmetic number, because the mean of its divisors is an integer number (11583810).

Almost surely, 2^162161623 is an apocalyptic number.

162161623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

162161623 is a deficient number, since it is larger than the sum of its proper divisors (23179337).

162161623 is a wasteful number, since it uses less digits than its factorization.

162161623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its digits is 2592, while the sum is 28.

The square root of 162161623 is about 12734.2696296254. The cubic root of 162161623 is about 545.3174067801.

The spelling of 162161623 in words is "one hundred sixty-two million, one hundred sixty-one thousand, six hundred twenty-three".