18349845858236 has 48 divisors (see below), whose sum is σ = 33278506614528. Its totient is φ = 8844053299200.

The previous prime is 18349845858233. The next prime is 18349845858271. The reversal of 18349845858236 is 63285854894381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18349845858233) by changing a digit.

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, 94434716 + ... + 94628828.

It is an arithmetic number, because the mean of its divisors is an integer number (693302221136).

Almost surely, 2^{18349845858236} is an apocalyptic number.

It is an amenable number.

18349845858236 is a deficient number, since it is larger than the sum of its proper divisors (14928660756292).

18349845858236 is a wasteful number, since it uses less digits than its factorization.

18349845858236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197142 (or 197140 counting only the distinct ones).

The product of its digits is 1592524800, while the sum is 74.

The spelling of 18349845858236 in words is "eighteen trillion, three hundred forty-nine billion, eight hundred forty-five million, eight hundred fifty-eight thousand, two hundred thirty-six".