19198247040 has 576 divisors, whose sum is σ = 77710389120. Its totient is φ = 4354560000.

The previous prime is 19198247009. The next prime is 19198247071. The reversal of 19198247040 is 4074289191.

It is a happy number.

19198247040 is a `hidden beast` number, since 1 + 91 + 98 + 2 + 470 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (19198247009) and next prime (19198247071).

It is a tau number, because it is divible by the number of its divisors (576).

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 71 ways as a sum of consecutive naturals, for example, 70842105 + ... + 70842375.

It is an arithmetic number, because the mean of its divisors is an integer number (134913870).

Almost surely, 2^19198247040 is an apocalyptic number.

19198247040 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 19198247040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38855194560).

19198247040 is an abundant number, since it is smaller than the sum of its proper divisors (58512142080).

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

19198247040 is a wasteful number, since it uses less digits than its factorization.

19198247040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 19198247040 in words is "nineteen billion, one hundred ninety-eight million, two hundred forty-seven thousand, forty".