18179887040 has 224 divisors, whose sum is σ = 55144903680. Its totient is φ = 5557469184.

The previous prime is 18179887031. The next prime is 18179887049. The reversal of 18179887040 is 4078897181.

It is an interprime number because it is at equal distance from previous prime (18179887031) and next prime (18179887049).

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18179887049) 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 31 ways as a sum of consecutive naturals, for example, 710957 + ... + 736083.

Almost surely, 2^18179887040 is an apocalyptic number.

18179887040 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 18179887040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27572451840).

18179887040 is an abundant number, since it is smaller than the sum of its proper divisors (36965016640).

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

18179887040 is a wasteful number, since it uses less digits than its factorization.

18179887040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25187 (or 25177 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 18179887040 in words is "eighteen billion, one hundred seventy-nine million, eight hundred eighty-seven thousand, forty".