18836154408939 has 8 divisors (see below), whose sum is σ = 28702711480320. Its totient is φ = 10763516805096.

The previous prime is 18836154408917. The next prime is 18836154408947. The reversal of 18836154408939 is 93980445163881.

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

It is not a de Polignac number, because 18836154408939 - 2¹¹ = 18836154406891 is a prime.

It is a super-3 number, since 3×18836154408939³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18836154408949) 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 7 ways as a sum of consecutive naturals, for example, 448479866859 + ... + 448479866900.

It is an arithmetic number, because the mean of its divisors is an integer number (3587838935040).

Almost surely, 2^{18836154408939} is an apocalyptic number.

18836154408939 is a deficient number, since it is larger than the sum of its proper divisors (9866557071381).

18836154408939 is an equidigital number, since it uses as much as digits as its factorization.

18836154408939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896959733769.

The product of its (nonzero) digits is 179159040, while the sum is 69.

The spelling of 18836154408939 in words is "eighteen trillion, eight hundred thirty-six billion, one hundred fifty-four million, four hundred eight thousand, nine hundred thirty-nine".