816160490 has 8 divisors (see below), whose sum is σ = 1469088900. Its totient is φ = 326464192.

The previous prime is 816160487. The next prime is 816160493. The reversal of 816160490 is 94061618.

It is an interprime number because it is at equal distance from previous prime (816160487) and next prime (816160493).

It can be written as a sum of positive squares in 2 ways, for example, as 768453841 + 47706649 = 27721^2 + 6907^2 .

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

It is a super-2 number, since 2×816160490² = 1332235890874080200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 816160490.

It is not an unprimeable number, because it can be changed into a prime (816160493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40808015 + ... + 40808034.

Almost surely, 2^816160490 is an apocalyptic number.

816160490 is a deficient number, since it is larger than the sum of its proper divisors (652928410).

816160490 is a wasteful number, since it uses less digits than its factorization.

816160490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81616056.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 816160490 is about 28568.5227129440. The cubic root of 816160490 is about 934.5270048935.

The spelling of 816160490 in words is "eight hundred sixteen million, one hundred sixty thousand, four hundred ninety".