13061889 has 6 divisors (see below), whose sum is σ = 18867186. Its totient is φ = 8707920.

The previous prime is 13061857. The next prime is 13061891. The reversal of 13061889 is 98816031.

13061889 is a `hidden beast` number, since 1 + 30 + 618 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10188864 + 2873025 = 3192^2 + 1695^2 .

It is not a de Polignac number, because 13061889 - 2⁵ = 13061857 is a prime.

It is a super-2 number, since 2×13061889² = 341225888496642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13061849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 725652 + ... + 725669.

It is an arithmetic number, because the mean of its divisors is an integer number (3144531).

Almost surely, 2^13061889 is an apocalyptic number.

It is an amenable number.

13061889 is a deficient number, since it is larger than the sum of its proper divisors (5805297).

13061889 is a wasteful number, since it uses less digits than its factorization.

13061889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451327 (or 1451324 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 13061889 is about 3614.1235452043. The cubic root of 13061889 is about 235.5060109086.

The spelling of 13061889 in words is "thirteen million, sixty-one thousand, eight hundred eighty-nine".