816161363 has 4 divisors (see below), whose sum is σ = 831560688. Its totient is φ = 800762040.

The previous prime is 816161341. The next prime is 816161441. The reversal of 816161363 is 363161618.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 816161363 - 2⁸ = 816161107 is a prime.

It is a super-2 number, since 2×816161363² = 1332238740908035538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816161323) 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 3 ways as a sum of consecutive naturals, for example, 7699583 + ... + 7699688.

It is an arithmetic number, because the mean of its divisors is an integer number (207890172).

Almost surely, 2^816161363 is an apocalyptic number.

816161363 is a deficient number, since it is larger than the sum of its proper divisors (15399325).

816161363 is a wasteful number, since it uses less digits than its factorization.

816161363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15399324.

The product of its digits is 15552, while the sum is 35.

The square root of 816161363 is about 28568.5379919939. The cubic root of 816161363 is about 934.5273380966.

The spelling of 816161363 in words is "eight hundred sixteen million, one hundred sixty-one thousand, three hundred sixty-three".