18142756408 has 64 divisors (see below), whose sum is σ = 40590720000. Its totient is φ = 7433175552.

The previous prime is 18142756393. The next prime is 18142756447. The reversal of 18142756408 is 80465724181.

It is a super-2 number, since 2×18142756408² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3357693 + ... + 3363091.

It is an arithmetic number, because the mean of its divisors is an integer number (634230000).

Almost surely, 2^18142756408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18142756408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20295360000).

18142756408 is an abundant number, since it is smaller than the sum of its proper divisors (22447963592).

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

18142756408 is a wasteful number, since it uses less digits than its factorization.

18142756408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044 (or 8040 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 18142756408 in words is "eighteen billion, one hundred forty-two million, seven hundred fifty-six thousand, four hundred eight".