13643049 has 16 divisors (see below), whose sum is σ = 20894720. Its totient is φ = 7756560.

The previous prime is 13643041. The next prime is 13643051. The reversal of 13643049 is 94034631.

It is not a de Polignac number, because 13643049 - 2³ = 13643041 is a prime.

It is a super-2 number, since 2×13643049² = 372265572032802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13643041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2892 + ... + 5970.

It is an arithmetic number, because the mean of its divisors is an integer number (1305920).

Almost surely, 2^13643049 is an apocalyptic number.

It is an amenable number.

13643049 is a deficient number, since it is larger than the sum of its proper divisors (7251671).

13643049 is a wasteful number, since it uses less digits than its factorization.

13643049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 13643049 is about 3693.6498209765. The cubic root of 13643049 is about 238.9482273203.

The spelling of 13643049 in words is "thirteen million, six hundred forty-three thousand, forty-nine".