13019481 has 8 divisors (see below), whose sum is σ = 19288160. Its totient is φ = 8679636.

The previous prime is 13019459. The next prime is 13019491. The reversal of 13019481 is 18491031.

13019481 = T₅₂₆ + T₅₂₇ + ... + T₆₀₆.

13019481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13019481 - 2⁶ = 13019417 is a prime.

It is a super-2 number, since 2×13019481² = 339013771018722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 482203 = 13019481 / (1 + 3 + 0 + 1 + 9 + 4 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13019401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241075 + ... + 241128.

It is an arithmetic number, because the mean of its divisors is an integer number (2411020).

Almost surely, 2^13019481 is an apocalyptic number.

It is an amenable number.

13019481 is a deficient number, since it is larger than the sum of its proper divisors (6268679).

13019481 is an equidigital number, since it uses as much as digits as its factorization.

13019481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482212 (or 482206 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 13019481 is about 3608.2517927661. The cubic root of 13019481 is about 235.2508623342.

The spelling of 13019481 in words is "thirteen million, nineteen thousand, four hundred eighty-one".