811616199 has 8 divisors (see below), whose sum is σ = 1085613552. Its totient is φ = 539348160.

The previous prime is 811616167. The next prime is 811616219. The reversal of 811616199 is 991616118.

It is a happy number.

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

It is not a de Polignac number, because 811616199 - 2⁵ = 811616167 is a prime.

It is a super-3 number, since 3×811616199³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 811616199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811616119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431232 + ... + 433109.

It is an arithmetic number, because the mean of its divisors is an integer number (135701694).

Almost surely, 2^811616199 is an apocalyptic number.

811616199 is a deficient number, since it is larger than the sum of its proper divisors (273997353).

811616199 is a wasteful number, since it uses less digits than its factorization.

811616199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864657.

The product of its digits is 23328, while the sum is 42.

The square root of 811616199 is about 28488.8785142553. The cubic root of 811616199 is about 932.7893282904.

The spelling of 811616199 in words is "eight hundred eleven million, six hundred sixteen thousand, one hundred ninety-nine".