18038460000 has 480 divisors, whose sum is σ = 65335286016. Its totient is φ = 4320000000.

The previous prime is 18038459963. The next prime is 18038460001. The reversal of 18038460000 is 6483081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 18038460000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038460001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 99659910 + ... + 99660090.

Almost surely, 2^18038460000 is an apocalyptic number.

18038460000 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 18038460000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32667643008).

18038460000 is an abundant number, since it is smaller than the sum of its proper divisors (47296826016).

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

18038460000 is a wasteful number, since it uses less digits than its factorization.

18038460000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 18038460000 in words is "eighteen billion, thirty-eight million, four hundred sixty thousand".