18836386431342 has 32 divisors (see below), whose sum is σ = 39083501268000. Its totient is φ = 6044914823808.

The previous prime is 18836386431223. The next prime is 18836386431367. The reversal of 18836386431342 is 24313468363881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155032533 + ... + 155153984.

It is an arithmetic number, because the mean of its divisors is an integer number (1221359414625).

Almost surely, 2^{18836386431342} is an apocalyptic number.

18836386431342 is an abundant number, since it is smaller than the sum of its proper divisors (20247114836658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18836386431342 is a wasteful number, since it uses less digits than its factorization.

18836386431342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310186900.

The product of its digits is 47775744, while the sum is 60.

The spelling of 18836386431342 in words is "eighteen trillion, eight hundred thirty-six billion, three hundred eighty-six million, four hundred thirty-one thousand, three hundred forty-two".