162181216 has 24 divisors (see below), whose sum is σ = 322127064. Its totient is φ = 80371200.

The previous prime is 162181193. The next prime is 162181223. The reversal of 162181216 is 612181261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18810 + ... + 26041.

It is an arithmetic number, because the mean of its divisors is an integer number (13421961).

Almost surely, 2^162181216 is an apocalyptic number.

162181216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

162181216 is a deficient number, since it is larger than the sum of its proper divisors (159945848).

162181216 is a wasteful number, since it uses less digits than its factorization.

162181216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44974 (or 44966 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 162181216 is about 12735.0389084604. The cubic root of 162181216 is about 545.3393683545.

The spelling of 162181216 in words is "one hundred sixty-two million, one hundred eighty-one thousand, two hundred sixteen".