16149813 has 8 divisors (see below), whose sum is σ = 22799808. Its totient is φ = 10133184.

The previous prime is 16149803. The next prime is 16149817. The reversal of 16149813 is 31894161.

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

It is not a de Polignac number, because 16149813 - 2⁸ = 16149557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16149817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158281 + ... + 158382.

It is an arithmetic number, because the mean of its divisors is an integer number (2849976).

Almost surely, 2^16149813 is an apocalyptic number.

It is an amenable number.

16149813 is a deficient number, since it is larger than the sum of its proper divisors (6649995).

16149813 is a wasteful number, since it uses less digits than its factorization.

16149813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316683.

The product of its digits is 5184, while the sum is 33.

The square root of 16149813 is about 4018.6829932205. The cubic root of 16149813 is about 252.7682369846.

The spelling of 16149813 in words is "sixteen million, one hundred forty-nine thousand, eight hundred thirteen".