13618472019 has 8 divisors (see below), whose sum is σ = 18743703552. Its totient is φ = 8786110920.

The previous prime is 13618471967. The next prime is 13618472027. The reversal of 13618472019 is 91027481631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13618472019 - 2⁹ = 13618471507 is a prime.

It is a super-2 number, since 2×13618472019² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13618472029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73217499 + ... + 73217684.

It is an arithmetic number, because the mean of its divisors is an integer number (2342962944).

Almost surely, 2^13618472019 is an apocalyptic number.

13618472019 is a deficient number, since it is larger than the sum of its proper divisors (5125231533).

13618472019 is a wasteful number, since it uses less digits than its factorization.

13618472019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146435217.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 13618472019 in words is "thirteen billion, six hundred eighteen million, four hundred seventy-two thousand, nineteen".