16131899 has 8 divisors (see below), whose sum is σ = 18482688. Its totient is φ = 13792680.

The previous prime is 16131883. The next prime is 16131937. The reversal of 16131899 is 99813161.

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

It is a cyclic number.

It is not a de Polignac number, because 16131899 - 2⁴ = 16131883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16131499) 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, 344 + ... + 5690.

It is an arithmetic number, because the mean of its divisors is an integer number (2310336).

Almost surely, 2^16131899 is an apocalyptic number.

16131899 is a deficient number, since it is larger than the sum of its proper divisors (2350789).

16131899 is an equidigital number, since it uses as much as digits as its factorization.

16131899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785.

The product of its digits is 11664, while the sum is 38.

The square root of 16131899 is about 4016.4535351476. The cubic root of 16131899 is about 252.6747422906.

The spelling of 16131899 in words is "sixteen million, one hundred thirty-one thousand, eight hundred ninety-nine".