19418559426 has 48 divisors (see below), whose sum is σ = 48152864448. Its totient is φ = 5540220000.

The previous prime is 19418559403. The next prime is 19418559431. The reversal of 19418559426 is 62495581491.

19418559426 is a `hidden beast` number, since 1 + 9 + 41 + 8 + 5 + 594 + 2 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21600 + ... + 198251.

It is an arithmetic number, because the mean of its divisors is an integer number (1003184676).

Almost surely, 2^19418559426 is an apocalyptic number.

19418559426 is an abundant number, since it is smaller than the sum of its proper divisors (28734305022).

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

19418559426 is a wasteful number, since it uses less digits than its factorization.

19418559426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220567 (or 220564 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 19418559426 in words is "nineteen billion, four hundred eighteen million, five hundred fifty-nine thousand, four hundred twenty-six".