19219893040 has 20 divisors (see below), whose sum is σ = 44686251504. Its totient is φ = 7687957184.

The previous prime is 19219893001. The next prime is 19219893103. The reversal of 19219893040 is 4039891291.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120124252 + ... + 120124411.

Almost surely, 2^19219893040 is an apocalyptic number.

19219893040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19219893040 is an abundant number, since it is smaller than the sum of its proper divisors (25466358464).

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

19219893040 is a wasteful number, since it uses less digits than its factorization.

19219893040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240248676 (or 240248670 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 19219893040 in words is "nineteen billion, two hundred nineteen million, eight hundred ninety-three thousand, forty".