19253006505 has 32 divisors (see below), whose sum is σ = 34274822400. Its totient is φ = 10254093696.

The previous prime is 19253006503. The next prime is 19253006581. The reversal of 19253006505 is 50560035291.

It is not a de Polignac number, because 19253006505 - 2¹ = 19253006503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19253006505.

It is not an unprimeable number, because it can be changed into a prime (19253006503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61 + ... + 196229.

It is an arithmetic number, because the mean of its divisors is an integer number (1071088200).

Almost surely, 2^19253006505 is an apocalyptic number.

19253006505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19253006505 is a deficient number, since it is larger than the sum of its proper divisors (15021815895).

19253006505 is a wasteful number, since it uses less digits than its factorization.

19253006505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196910 (or 196904 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 19253006505 in words is "nineteen billion, two hundred fifty-three million, six thousand, five hundred five".