13808089818 has 32 divisors (see below), whose sum is σ = 30688502400. Its totient is φ = 4602117888.

The previous prime is 13808089817. The next prime is 13808089819. The reversal of 13808089818 is 81898080831.

It is an interprime number because it is at equal distance from previous prime (13808089817) and next prime (13808089819).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13808089817) 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, 769978 + ... + 787706.

It is an arithmetic number, because the mean of its divisors is an integer number (959015700).

Almost surely, 2^13808089818 is an apocalyptic number.

13808089818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13808089818 is an abundant number, since it is smaller than the sum of its proper divisors (16880412582).

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

13808089818 is a wasteful number, since it uses less digits than its factorization.

13808089818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32163 (or 32157 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 54.

The spelling of 13808089818 in words is "thirteen billion, eight hundred eight million, eighty-nine thousand, eight hundred eighteen".