13748386815 has 12 divisors (see below), whose sum is σ = 23830537224. Its totient is φ = 7332472944.

The previous prime is 13748386811. The next prime is 13748386889. The reversal of 13748386815 is 51868384731.

It is a happy number.

13748386815 is a `hidden beast` number, since 1 + 3 + 7 + 483 + 86 + 81 + 5 = 666.

It is not a de Polignac number, because 13748386815 - 2² = 13748386811 is a prime.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13748386811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152759809 + ... + 152759898.

It is an arithmetic number, because the mean of its divisors is an integer number (1985878102).

Almost surely, 2^13748386815 is an apocalyptic number.

13748386815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13748386815 is a deficient number, since it is larger than the sum of its proper divisors (10082150409).

13748386815 is a wasteful number, since it uses less digits than its factorization.

13748386815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305519718 (or 305519715 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 13748386815 in words is "thirteen billion, seven hundred forty-eight million, three hundred eighty-six thousand, eight hundred fifteen".