19884299040 has 96 divisors (see below), whose sum is σ = 69595061760. Its totient is φ = 5302478592.

The previous prime is 19884298939. The next prime is 19884299063. The reversal of 19884299040 is 4099248891.

19884299040 is a `hidden beast` number, since 1 + 98 + 8 + 429 + 90 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2297104 + ... + 2305743.

It is an arithmetic number, because the mean of its divisors is an integer number (724948560).

Almost surely, 2^19884299040 is an apocalyptic number.

19884299040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19884299040 is an abundant number, since it is smaller than the sum of its proper divisors (49710762720).

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

19884299040 is a wasteful number, since it uses less digits than its factorization.

19884299040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602871 (or 4602857 counting only the distinct ones).

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

The spelling of 19884299040 in words is "nineteen billion, eight hundred eighty-four million, two hundred ninety-nine thousand, forty".