19897248204 has 72 divisors (see below), whose sum is σ = 52523976960. Its totient is φ = 6339048672.

The previous prime is 19897248197. The next prime is 19897248211. The reversal of 19897248204 is 40284279891.

19897248204 is a `hidden beast` number, since 1 + 98 + 9 + 72 + 482 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (19897248197) and next prime (19897248211).

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, 1123087 + ... + 1140665.

It is an arithmetic number, because the mean of its divisors is an integer number (729499680).

Almost surely, 2^19897248204 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 19897248204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26261988480).

19897248204 is an abundant number, since it is smaller than the sum of its proper divisors (32626728756).

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

19897248204 is a wasteful number, since it uses less digits than its factorization.

19897248204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18979 (or 18974 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 19897248204 in words is "nineteen billion, eight hundred ninety-seven million, two hundred forty-eight thousand, two hundred four".