19278401460 has 48 divisors (see below), whose sum is σ = 54062297856. Its totient is φ = 5133023872.

The previous prime is 19278401459. The next prime is 19278401473. The reversal of 19278401460 is 6410487291.

It is a congruent number.

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, 206844 + ... + 285203.

It is an arithmetic number, because the mean of its divisors is an integer number (1126297872).

Almost surely, 2^19278401460 is an apocalyptic number.

19278401460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19278401460 is an abundant number, since it is smaller than the sum of its proper divisors (34783896396).

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

19278401460 is a wasteful number, since it uses less digits than its factorization.

19278401460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492712 (or 492710 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 19278401460 in words is "nineteen billion, two hundred seventy-eight million, four hundred one thousand, four hundred sixty".