13387000381 has 4 divisors (see below), whose sum is σ = 13389193564. Its totient is φ = 13384807200.

The previous prime is 13387000369. The next prime is 13387000409. The reversal of 13387000381 is 18300078331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18300078331 = 43 ⋅425583217.

It can be written as a sum of positive squares in 2 ways, for example, as 642622500 + 12744377881 = 25350^2 + 112891^2 .

It is a cyclic number.

It is not a de Polignac number, because 13387000381 - 2¹³ = 13386992189 is a prime.

It is a super-2 number, since 2×13387000381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13387000301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087410 + ... + 1099651.

It is an arithmetic number, because the mean of its divisors is an integer number (3347298391).

Almost surely, 2^13387000381 is an apocalyptic number.

13387000381 is the 73177-th centered pentagonal number.

It is an amenable number.

13387000381 is a deficient number, since it is larger than the sum of its proper divisors (2193183).

13387000381 is an equidigital number, since it uses as much as digits as its factorization.

13387000381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193182.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 13387000381 in words is "thirteen billion, three hundred eighty-seven million, three hundred eighty-one", and thus it is an aban number.