13019816 has 16 divisors (see below), whose sum is σ = 24450900. Its totient is φ = 6499584.

The previous prime is 13019813. The next prime is 13019857. The reversal of 13019816 is 61891031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12602500 + 417316 = 3550^2 + 646^2 .

It is not an unprimeable number, because it can be changed into a prime (13019813) 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 3 ways as a sum of consecutive naturals, for example, 8000 + ... + 9488.

Almost surely, 2^13019816 is an apocalyptic number.

It is an amenable number.

13019816 is a deficient number, since it is larger than the sum of its proper divisors (11431084).

13019816 is a wasteful number, since it uses less digits than its factorization.

13019816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 13019816 is about 3608.2982138399. The cubic root of 13019816 is about 235.2528800378.

The spelling of 13019816 in words is "thirteen million, nineteen thousand, eight hundred sixteen".