13019745 has 16 divisors (see below), whose sum is σ = 21395520. Its totient is φ = 6755904.

The previous prime is 13019737. The next prime is 13019749. The reversal of 13019745 is 54791031.

It is not a de Polignac number, because 13019745 - 2³ = 13019737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13019749) 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 15 ways as a sum of consecutive naturals, for example, 11175 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (1337220).

Almost surely, 2^13019745 is an apocalyptic number.

13019745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13019745 is a deficient number, since it is larger than the sum of its proper divisors (8375775).

13019745 is a wasteful number, since it uses less digits than its factorization.

13019745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23504.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 13019745 is about 3608.2883753935. The cubic root of 13019745 is about 235.2524524080.

The spelling of 13019745 in words is "thirteen million, nineteen thousand, seven hundred forty-five".