18996041479 has 4 divisors (see below), whose sum is σ = 19006163784. Its totient is φ = 18985919176.

The previous prime is 18996041473. The next prime is 18996041489. The reversal of 18996041479 is 97414069981.

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-18996041479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996041473) 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, 5058337 + ... + 5062090.

It is an arithmetic number, because the mean of its divisors is an integer number (4751540946).

Almost surely, 2^18996041479 is an apocalyptic number.

18996041479 is a deficient number, since it is larger than the sum of its proper divisors (10122305).

18996041479 is a wasteful number, since it uses less digits than its factorization.

18996041479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122304.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 18996041479 in words is "eighteen billion, nine hundred ninety-six million, forty-one thousand, four hundred seventy-nine".