162381816 has 24 divisors (see below), whose sum is σ = 439784280. Its totient is φ = 54127248.

The previous prime is 162381787. The next prime is 162381827. The reversal of 162381816 is 618183261.

162381816 is a `hidden beast` number, since 1 + 623 + 8 + 18 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127580 + ... + 1127723.

It is an arithmetic number, because the mean of its divisors is an integer number (18324345).

Almost surely, 2^162381816 is an apocalyptic number.

It is an amenable number.

162381816 is an abundant number, since it is smaller than the sum of its proper divisors (277402464).

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

162381816 is a wasteful number, since it uses less digits than its factorization.

162381816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255315 (or 2255308 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 162381816 is about 12742.9123829680. The cubic root of 162381816 is about 545.5641169574.

It can be divided in two parts, 16 and 2381816, that added together give a palindrome (2381832).

The spelling of 162381816 in words is "one hundred sixty-two million, three hundred eighty-one thousand, eight hundred sixteen".