13250019 has 4 divisors (see below), whose sum is σ = 17666696. Its totient is φ = 8833344.

The previous prime is 13250009. The next prime is 13250101. The reversal of 13250019 is 91005231.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-13250019 is a prime.

It is a super-2 number, since 2×13250019² = 351126007000722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13249977 and 13250004.

It is not an unprimeable number, because it can be changed into a prime (13250009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208334 + ... + 2208339.

It is an arithmetic number, because the mean of its divisors is an integer number (4416674).

Almost surely, 2^13250019 is an apocalyptic number.

13250019 is a deficient number, since it is larger than the sum of its proper divisors (4416677).

13250019 is an equidigital number, since it uses as much as digits as its factorization.

13250019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416676.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 13250019 is about 3640.0575544900. The cubic root of 13250019 is about 236.6312876648.

The spelling of 13250019 in words is "thirteen million, two hundred fifty thousand, nineteen".