13618642 has 8 divisors (see below), whose sum is σ = 20926332. Its totient is φ = 6643200.

The previous prime is 13618613. The next prime is 13618667. The reversal of 13618642 is 24681631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11771761 + 1846881 = 3431^2 + 1359^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82959 + ... + 83122.

Almost surely, 2^13618642 is an apocalyptic number.

13618642 is a deficient number, since it is larger than the sum of its proper divisors (7307690).

13618642 is a wasteful number, since it uses less digits than its factorization.

13618642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166124.

The product of its digits is 6912, while the sum is 31.

The square root of 13618642 is about 3690.3444283698. The cubic root of 13618642 is about 238.8056518933.

The spelling of 13618642 in words is "thirteen million, six hundred eighteen thousand, six hundred forty-two".