13019139 has 24 divisors (see below), whose sum is σ = 21621600. Its totient is φ = 7394688.

The previous prime is 13019137. The next prime is 13019143. The reversal of 13019139 is 93191031.

13019139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13019139 - 2¹ = 13019137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13019137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11887 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^13019139 is an apocalyptic number.

13019139 is a deficient number, since it is larger than the sum of its proper divisors (8602461).

13019139 is a wasteful number, since it uses less digits than its factorization.

13019139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 13019139 is about 3608.2044010837. The cubic root of 13019139 is about 235.2488024339.

It can be divided in two parts, 1301 and 9139, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 13019139 in words is "thirteen million, nineteen thousand, one hundred thirty-nine".