18672465613 has 8 divisors (see below), whose sum is σ = 19491148800. Its totient is φ = 17854352208.

The previous prime is 18672465607. The next prime is 18672465649. The reversal of 18672465613 is 31656427681.

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

It is a cyclic number.

It is not a de Polignac number, because 18672465613 - 2⁹ = 18672465101 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 (18672465653) 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, 74778 + ... + 207211.

It is an arithmetic number, because the mean of its divisors is an integer number (2436393600).

Almost surely, 2^18672465613 is an apocalyptic number.

It is an amenable number.

18672465613 is a deficient number, since it is larger than the sum of its proper divisors (818683187).

18672465613 is a wasteful number, since it uses less digits than its factorization.

18672465613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284891.

The product of its digits is 1451520, while the sum is 49.

The spelling of 18672465613 in words is "eighteen billion, six hundred seventy-two million, four hundred sixty-five thousand, six hundred thirteen".