18836077843 has 16 divisors (see below), whose sum is σ = 21763344384. Its totient is φ = 16111864960.

The previous prime is 18836077829. The next prime is 18836077859. The reversal of 18836077843 is 34877063881.

It is a cyclic number.

It is not a de Polignac number, because 18836077843 - 2²¹ = 18833980691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18836077243) 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, 759546 + ... + 783952.

It is an arithmetic number, because the mean of its divisors is an integer number (1360209024).

Almost surely, 2^18836077843 is an apocalyptic number.

18836077843 is a deficient number, since it is larger than the sum of its proper divisors (2927266541).

18836077843 is a wasteful number, since it uses less digits than its factorization.

18836077843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28562.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 18836077843 in words is "eighteen billion, eight hundred thirty-six million, seventy-seven thousand, eight hundred forty-three".