19488254905 has 16 divisors (see below), whose sum is σ = 26792115840. Its totient is φ = 13330691712.

The previous prime is 19488254899. The next prime is 19488254911. The reversal of 19488254905 is 50945288491.

It is an interprime number because it is at equal distance from previous prime (19488254899) and next prime (19488254911).

It is a cyclic number.

It is not a de Polignac number, because 19488254905 - 2³ = 19488254897 is a prime.

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, 666379 + ... + 695008.

It is an arithmetic number, because the mean of its divisors is an integer number (1674507240).

Almost surely, 2^19488254905 is an apocalyptic number.

It is an amenable number.

19488254905 is a deficient number, since it is larger than the sum of its proper divisors (7303860935).

19488254905 is a wasteful number, since it uses less digits than its factorization.

19488254905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361808.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 19488254905 in words is "nineteen billion, four hundred eighty-eight million, two hundred fifty-four thousand, nine hundred five".