19215780304 has 40 divisors (see below), whose sum is σ = 42765262848. Its totient is φ = 8193521280.

The previous prime is 19215780271. The next prime is 19215780319. The reversal of 19215780304 is 40308751291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413392 + ... + 457519.

Almost surely, 2^19215780304 is an apocalyptic number.

19215780304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19215780304 is an abundant number, since it is smaller than the sum of its proper divisors (23549482544).

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

19215780304 is a wasteful number, since it uses less digits than its factorization.

19215780304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871123 (or 871117 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 19215780304 in words is "nineteen billion, two hundred fifteen million, seven hundred eighty thousand, three hundred four".