13818305406 has 16 divisors (see below), whose sum is σ = 28224624384. Its totient is φ = 4508099544.

The previous prime is 13818305393. The next prime is 13818305419. The reversal of 13818305406 is 60450381831.

It is an interprime number because it is at equal distance from previous prime (13818305393) and next prime (13818305419).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24500260 + ... + 24500823.

It is an arithmetic number, because the mean of its divisors is an integer number (1764039024).

Almost surely, 2^13818305406 is an apocalyptic number.

13818305406 is an abundant number, since it is smaller than the sum of its proper divisors (14406318978).

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

13818305406 is a wasteful number, since it uses less digits than its factorization.

13818305406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49001135.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 13818305406 in words is "thirteen billion, eight hundred eighteen million, three hundred five thousand, four hundred six".