19308880280 has 32 divisors (see below), whose sum is σ = 44369346240. Its totient is φ = 7559220480.

The previous prime is 19308880277. The next prime is 19308880301. The reversal of 19308880280 is 8208880391.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

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, 5133461 + ... + 5137220.

It is an arithmetic number, because the mean of its divisors is an integer number (1386542070).

Almost surely, 2^19308880280 is an apocalyptic number.

19308880280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19308880280 is an abundant number, since it is smaller than the sum of its proper divisors (25060465960).

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

19308880280 is a wasteful number, since it uses less digits than its factorization.

19308880280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270739 (or 10270735 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The spelling of 19308880280 in words is "nineteen billion, three hundred eight million, eight hundred eighty thousand, two hundred eighty".