18034183440 has 1200 divisors, whose sum is σ = 83405255472. Its totient is φ = 3567255552.

The previous prime is 18034183429. The next prime is 18034183451. The reversal of 18034183440 is 4438143081.

18034183440 is a `hidden beast` number, since 1 + 8 + 0 + 34 + 183 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (18034183429) and next prime (18034183451).

It can be written as a sum of positive squares in 8 ways, for example, as 796594176 + 17237589264 = 28224^2 + 131292^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18034183395 and 18034183404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 70171792 + ... + 70172048.

Almost surely, 2^18034183440 is an apocalyptic number.

18034183440 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 18034183440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41702627736).

18034183440 is an abundant number, since it is smaller than the sum of its proper divisors (65371072032).

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

18034183440 is a wasteful number, since it uses less digits than its factorization.

18034183440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 18034183440 in words is "eighteen billion, thirty-four million, one hundred eighty-three thousand, four hundred forty".