19880830540 has 24 divisors (see below), whose sum is σ = 44205612192. Its totient is φ = 7484547840.

The previous prime is 19880830537. The next prime is 19880830561. The reversal of 19880830540 is 4503808891.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29236176 + ... + 29236855.

It is an arithmetic number, because the mean of its divisors is an integer number (1841900508).

Almost surely, 2^19880830540 is an apocalyptic number.

19880830540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19880830540 is an abundant number, since it is smaller than the sum of its proper divisors (24324781652).

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

19880830540 is a wasteful number, since it uses less digits than its factorization.

19880830540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58473057 (or 58473055 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 19880830540 in words is "nineteen billion, eight hundred eighty million, eight hundred thirty thousand, five hundred forty".