19452604859 has 4 divisors (see below), whose sum is σ = 19605775104. Its totient is φ = 19299434616.

The previous prime is 19452604781. The next prime is 19452604861. The reversal of 19452604859 is 95840625491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19452604859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19452604859.

It is not an unprimeable number, because it can be changed into a prime (19452604159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76584932 + ... + 76585185.

It is an arithmetic number, because the mean of its divisors is an integer number (4901443776).

Almost surely, 2^19452604859 is an apocalyptic number.

19452604859 is a deficient number, since it is larger than the sum of its proper divisors (153170245).

19452604859 is a wasteful number, since it uses less digits than its factorization.

19452604859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153170244.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 19452604859 in words is "nineteen billion, four hundred fifty-two million, six hundred four thousand, eight hundred fifty-nine".