18162163260 has 144 divisors (see below), whose sum is σ = 55533703680. Its totient is φ = 4804561920.

The previous prime is 18162163219. The next prime is 18162163267. The reversal of 18162163260 is 6236126181.

It is a happy number.

18162163260 is a `hidden beast` number, since 1 + 8 + 1 + 621 + 6 + 3 + 26 + 0 = 666.

It is a super-3 number, since 3×18162163260³ (a number of 32 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18162163267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22449736 + ... + 22450544.

It is an arithmetic number, because the mean of its divisors is an integer number (385650720).

Almost surely, 2^18162163260 is an apocalyptic number.

18162163260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18162163260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27766851840).

18162163260 is an abundant number, since it is smaller than the sum of its proper divisors (37371540420).

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

18162163260 is a wasteful number, since it uses less digits than its factorization.

18162163260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 18162163260 in words is "eighteen billion, one hundred sixty-two million, one hundred sixty-three thousand, two hundred sixty".