18904749600 has 216 divisors, whose sum is σ = 67638639600. Its totient is φ = 4582899200.

The previous prime is 18904749569. The next prime is 18904749631. The reversal of 18904749600 is 694740981.

It is an interprime number because it is at equal distance from previous prime (18904749569) and next prime (18904749631).

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 18904749600.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 257851 + ... + 322949.

It is an arithmetic number, because the mean of its divisors is an integer number (313141850).

Almost surely, 2^18904749600 is an apocalyptic number.

18904749600 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 18904749600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33819319800).

18904749600 is an abundant number, since it is smaller than the sum of its proper divisors (48733890000).

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

18904749600 is a wasteful number, since it uses less digits than its factorization.

18904749600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65144 (or 65120 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 18904749600 in words is "eighteen billion, nine hundred four million, seven hundred forty-nine thousand, six hundred".