18380312000 has 224 divisors, whose sum is σ = 47837896704. Its totient is φ = 6982272000.

The previous prime is 18380311981. The next prime is 18380312011. The reversal of 18380312000 is 21308381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35143739 + ... + 35144261.

Almost surely, 2^18380312000 is an apocalyptic number.

18380312000 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 18380312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23918948352).

18380312000 is an abundant number, since it is smaller than the sum of its proper divisors (29457584704).

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

18380312000 is a wasteful number, since it uses less digits than its factorization.

18380312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 18380312000 in words is "eighteen billion, three hundred eighty million, three hundred twelve thousand".