13781853 has 16 divisors (see below), whose sum is σ = 21306240. Its totient is φ = 8788032.

The previous prime is 13781843. The next prime is 13781861. The reversal of 13781853 is 35818731.

13781853 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 13781853 - 2¹⁴ = 13765469 is a prime.

It is a super-2 number, since 2×13781853² = 379878944227218, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10476 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (1331640).

Almost surely, 2^13781853 is an apocalyptic number.

It is an amenable number.

13781853 is a deficient number, since it is larger than the sum of its proper divisors (7524387).

13781853 is a wasteful number, since it uses less digits than its factorization.

13781853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22225 (or 22219 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 13781853 is about 3712.3918166056. The cubic root of 13781853 is about 239.7558454532.

The spelling of 13781853 in words is "thirteen million, seven hundred eighty-one thousand, eight hundred fifty-three".