13803845 has 8 divisors (see below), whose sum is σ = 18070560. Its totient is φ = 10039120.

The previous prime is 13803833. The next prime is 13803851. The reversal of 13803845 is 54830831.

It is a happy number.

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

It is not a de Polignac number, because 13803845 - 2⁸ = 13803589 is a prime.

It is a super-2 number, since 2×13803845² = 381092273568050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125435 + ... + 125544.

It is an arithmetic number, because the mean of its divisors is an integer number (2258820).

Almost surely, 2^13803845 is an apocalyptic number.

It is an amenable number.

13803845 is a deficient number, since it is larger than the sum of its proper divisors (4266715).

13803845 is a wasteful number, since it uses less digits than its factorization.

13803845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250995.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 13803845 is about 3715.3526077615. The cubic root of 13803845 is about 239.8833055377.

It can be divided in two parts, 1380 and 3845, that added together give a palindrome (5225).

The spelling of 13803845 in words is "thirteen million, eight hundred three thousand, eight hundred forty-five".