18699085200 has 120 divisors (see below), whose sum is σ = 60168871168. Its totient is φ = 4963991040.

The previous prime is 18699085193. The next prime is 18699085231. The reversal of 18699085200 is 258099681.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-4 number, since 4×18699085200⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18699085200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232662 + ... + 302538.

Almost surely, 2^18699085200 is an apocalyptic number.

18699085200 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 18699085200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30084435584).

18699085200 is an abundant number, since it is smaller than the sum of its proper divisors (41469785968).

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

18699085200 is a wasteful number, since it uses less digits than its factorization.

18699085200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70121 (or 70110 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 18699085200 in words is "eighteen billion, six hundred ninety-nine million, eighty-five thousand, two hundred".