18010634493 has 8 divisors (see below), whose sum is σ = 24024772000. Its totient is φ = 12001793328.

The previous prime is 18010634491. The next prime is 18010634497. The reversal of 18010634493 is 39443601081.

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

It is not a de Polignac number, because 18010634493 - 2¹ = 18010634491 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 (18010634491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316143 + ... + 1329756.

It is an arithmetic number, because the mean of its divisors is an integer number (3003096500).

Almost surely, 2^18010634493 is an apocalyptic number.

It is an amenable number.

18010634493 is a deficient number, since it is larger than the sum of its proper divisors (6014137507).

18010634493 is a wasteful number, since it uses less digits than its factorization.

18010634493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648171.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 18010634493 in words is "eighteen billion, ten million, six hundred thirty-four thousand, four hundred ninety-three".