19204898904 has 64 divisors (see below), whose sum is σ = 53449257600. Its totient is φ = 6389355168.

The previous prime is 19204898903. The next prime is 19204898917. The reversal of 19204898904 is 40989840291.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19204898903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27967 + ... + 197969.

It is an arithmetic number, because the mean of its divisors is an integer number (835144650).

Almost surely, 2^19204898904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19204898904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26724628800).

19204898904 is an abundant number, since it is smaller than the sum of its proper divisors (34244358696).

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

19204898904 is a wasteful number, since it uses less digits than its factorization.

19204898904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170541 (or 170531 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 19204898904 in words is "nineteen billion, two hundred four million, eight hundred ninety-eight thousand, nine hundred four".