13813019 has 32 divisors (see below), whose sum is σ = 17107200. Its totient is φ = 11007360.

The previous prime is 13813013. The next prime is 13813039. The reversal of 13813019 is 91031831.

13813019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13813019 - 2²⁰ = 12764443 is a prime.

It is a super-2 number, since 2×13813019² = 381598987788722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13813013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260597 + ... + 260649.

It is an arithmetic number, because the mean of its divisors is an integer number (534600).

Almost surely, 2^13813019 is an apocalyptic number.

13813019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13813019 is a deficient number, since it is larger than the sum of its proper divisors (3294181).

13813019 is a wasteful number, since it uses less digits than its factorization.

13813019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 13813019 is about 3716.5870096098. The cubic root of 13813019 is about 239.9364357127.

The spelling of 13813019 in words is "thirteen million, eight hundred thirteen thousand, nineteen".