19018678460 has 24 divisors (see below), whose sum is σ = 39987906336. Its totient is φ = 7598198720.

The previous prime is 19018678429. The next prime is 19018678489. The reversal of 19018678460 is 6487681091.

It is a junction number, because it is equal to n+sod(n) for n = 19018678399 and 19018678408.

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, 562712 + ... + 595551.

It is an arithmetic number, because the mean of its divisors is an integer number (1666162764).

Almost surely, 2^19018678460 is an apocalyptic number.

19018678460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19018678460 is an abundant number, since it is smaller than the sum of its proper divisors (20969227876).

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

19018678460 is a wasteful number, since it uses less digits than its factorization.

19018678460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159093 (or 1159091 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 19018678460 in words is "nineteen billion, eighteen million, six hundred seventy-eight thousand, four hundred sixty".