13145969 has 2 divisors, whose sum is σ = 13145970. Its totient is φ = 13145968.

The previous prime is 13145963. The next prime is 13145971. The reversal of 13145969 is 96954131.

13145969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9486400 + 3659569 = 3080^2 + 1913^2 .

It is a cyclic number.

It is not a de Polignac number, because 13145969 - 2¹⁶ = 13080433 is a prime.

It is a super-2 number, since 2×13145969² = 345633001897922, which contains 22 as substring.

Together with 13145971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13145963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6572984 + 6572985.

It is an arithmetic number, because the mean of its divisors is an integer number (6572985).

Almost surely, 2^13145969 is an apocalyptic number.

It is an amenable number.

13145969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13145969 is an equidigital number, since it uses as much as digits as its factorization.

13145969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 13145969 is about 3625.7370285226. The cubic root of 13145969 is about 236.0102516374.

The spelling of 13145969 in words is "thirteen million, one hundred forty-five thousand, nine hundred sixty-nine".