16813642 has 8 divisors (see below), whose sum is σ = 25524576. Its totient is φ = 8305452.

The previous prime is 16813637. The next prime is 16813661. The reversal of 16813642 is 24631861.

It is a happy number.

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, 50478 + ... + 50809.

It is an arithmetic number, because the mean of its divisors is an integer number (3190572).

Almost surely, 2^16813642 is an apocalyptic number.

16813642 is a deficient number, since it is larger than the sum of its proper divisors (8710934).

16813642 is a wasteful number, since it uses less digits than its factorization.

16813642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101372.

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

The square root of 16813642 is about 4100.4441222872. Note that the first 3 decimals coincide. The cubic root of 16813642 is about 256.1851382932.

The spelling of 16813642 in words is "sixteen million, eight hundred thirteen thousand, six hundred forty-two".