13018887 has 20 divisors (see below), whose sum is σ = 22227216. Its totient is φ = 7439040.

The previous prime is 13018871. The next prime is 13018909. The reversal of 13018887 is 78881031.

13018887 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13018887 - 2⁴ = 13018871 is a prime.

13018887 is strictly pandigital in base 8.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13018807) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10914 + ... + 12047.

Almost surely, 2^13018887 is an apocalyptic number.

13018887 is a deficient number, since it is larger than the sum of its proper divisors (9208329).

13018887 is an equidigital number, since it uses as much as digits as its factorization.

13018887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22980 (or 22971 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 13018887 is about 3608.1694804984. The cubic root of 13018887 is about 235.2472845895.

The spelling of 13018887 in words is "thirteen million, eighteen thousand, eight hundred eighty-seven".