18082145407 has 4 divisors (see below), whose sum is σ = 18094439296. Its totient is φ = 18069851520.

The previous prime is 18082145399. The next prime is 18082145423. The reversal of 18082145407 is 70454128081.

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

It is a cyclic number.

It is not a de Polignac number, because 18082145407 - 2³ = 18082145399 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 18082145407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082145447) 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, 6144738 + ... + 6147679.

It is an arithmetic number, because the mean of its divisors is an integer number (4523609824).

Almost surely, 2^18082145407 is an apocalyptic number.

18082145407 is a deficient number, since it is larger than the sum of its proper divisors (12293889).

18082145407 is a wasteful number, since it uses less digits than its factorization.

18082145407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293888.

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 18082145407 in words is "eighteen billion, eighty-two million, one hundred forty-five thousand, four hundred seven".