13409374518 has 36 divisors (see below), whose sum is σ = 29206883628. Its totient is φ = 4446240120.

The previous prime is 13409374487. The next prime is 13409374541. The reversal of 13409374518 is 81547390431.

13409374518 is a `hidden beast` number, since 1 + 3 + 40 + 93 + 7 + 4 + 518 = 666.

13409374518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13409374518² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7135503 + ... + 7137381.

It is an arithmetic number, because the mean of its divisors is an integer number (811302323).

Almost surely, 2^13409374518 is an apocalyptic number.

13409374518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13409374518 is an abundant number, since it is smaller than the sum of its proper divisors (15797509110).

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

13409374518 is an equidigital number, since it uses as much as digits as its factorization.

13409374518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 13409374518 in words is "thirteen billion, four hundred nine million, three hundred seventy-four thousand, five hundred eighteen".