18541114815 has 32 divisors (see below), whose sum is σ = 30333445056. Its totient is φ = 9667374080.

The previous prime is 18541114811. The next prime is 18541114817. The reversal of 18541114815 is 51841114581.

It is not a de Polignac number, because 18541114815 - 2² = 18541114811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18541114811) 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 31 ways as a sum of consecutive naturals, for example, 181897 + ... + 264893.

It is an arithmetic number, because the mean of its divisors is an integer number (947920158).

Almost surely, 2^18541114815 is an apocalyptic number.

18541114815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18541114815 is a deficient number, since it is larger than the sum of its proper divisors (11792330241).

18541114815 is a wasteful number, since it uses less digits than its factorization.

18541114815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83339.

The product of its digits is 25600, while the sum is 39.

The spelling of 18541114815 in words is "eighteen billion, five hundred forty-one million, one hundred fourteen thousand, eight hundred fifteen".