18245191605 has 16 divisors (see below), whose sum is σ = 30909501504. Its totient is φ = 9158370560.

The previous prime is 18245191589. The next prime is 18245191607. The reversal of 18245191605 is 50619154281.

It is not a de Polignac number, because 18245191605 - 2⁴ = 18245191589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245191607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35774631 + ... + 35775140.

It is an arithmetic number, because the mean of its divisors is an integer number (1931843844).

Almost surely, 2^18245191605 is an apocalyptic number.

18245191605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18245191605 is a deficient number, since it is larger than the sum of its proper divisors (12664309899).

18245191605 is a wasteful number, since it uses less digits than its factorization.

18245191605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71549796.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 18245191605 in words is "eighteen billion, two hundred forty-five million, one hundred ninety-one thousand, six hundred five".