18675435407 has 4 divisors (see below), whose sum is σ = 19658353080. Its totient is φ = 17692517736.

The previous prime is 18675435287. The next prime is 18675435437. The reversal of 18675435407 is 70453457681.

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

It is not a de Polignac number, because 18675435407 - 2²⁴ = 18658658191 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 (18675435437) 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, 491458808 + ... + 491458845.

It is an arithmetic number, because the mean of its divisors is an integer number (4914588270).

Almost surely, 2^18675435407 is an apocalyptic number.

18675435407 is a deficient number, since it is larger than the sum of its proper divisors (982917673).

18675435407 is an equidigital number, since it uses as much as digits as its factorization.

18675435407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982917672.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 18675435407 in words is "eighteen billion, six hundred seventy-five million, four hundred thirty-five thousand, four hundred seven".