2319985800 has 480 divisors, whose sum is σ = 9009601920. Its totient is φ = 548467200.

The previous prime is 2319985687. The next prime is 2319985813. The reversal of 2319985800 is 85899132.

It is a happy number.

It is a super-2 number, since 2×2319985800² = 10764668224403280000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 8375262 + ... + 8375538.

It is an arithmetic number, because the mean of its divisors is an integer number (18770004).

Almost surely, 2^2319985800 is an apocalyptic number.

2319985800 is a gapful number since it is divisible by the number (20) 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 2319985800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4504800960).

2319985800 is an abundant number, since it is smaller than the sum of its proper divisors (6689616120).

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

2319985800 is a wasteful number, since it uses less digits than its factorization.

2319985800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 2319985800 is about 48166.2309092169. The cubic root of 2319985800 is about 1323.8184887002.

The spelling of 2319985800 in words is "two billion, three hundred nineteen million, nine hundred eighty-five thousand, eight hundred".