13019855 has 8 divisors (see below), whose sum is σ = 15695232. Its totient is φ = 10368288.

The previous prime is 13019813. The next prime is 13019857. The reversal of 13019855 is 55891031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13019855 - 2⁶ = 13019791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13019857) 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, 4724 + ... + 6953.

It is an arithmetic number, because the mean of its divisors is an integer number (1961904).

Almost surely, 2^13019855 is an apocalyptic number.

13019855 is a deficient number, since it is larger than the sum of its proper divisors (2675377).

13019855 is a wasteful number, since it uses less digits than its factorization.

13019855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11905.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 13019855 is about 3608.3036180455. The cubic root of 13019855 is about 235.2531149324.

The spelling of 13019855 in words is "thirteen million, nineteen thousand, eight hundred fifty-five".