816492911 has 12 divisors (see below), whose sum is σ = 912657600. Its totient is φ = 729368640.

The previous prime is 816492907. The next prime is 816492923. The reversal of 816492911 is 119294618.

It is not a de Polignac number, because 816492911 - 2² = 816492907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816491911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72686 + ... + 83163.

It is an arithmetic number, because the mean of its divisors is an integer number (76054800).

Almost surely, 2^816492911 is an apocalyptic number.

816492911 is a deficient number, since it is larger than the sum of its proper divisors (96164689).

816492911 is a wasteful number, since it uses less digits than its factorization.

816492911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155906 (or 155893 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The square root of 816492911 is about 28574.3400798689. The cubic root of 816492911 is about 934.6538648425.

The spelling of 816492911 in words is "eight hundred sixteen million, four hundred ninety-two thousand, nine hundred eleven".