816000481 has 2 divisors, whose sum is σ = 816000482. Its totient is φ = 816000480.

The previous prime is 816000461. The next prime is 816000499. The reversal of 816000481 is 184000618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751856400 + 64144081 = 27420^2 + 8009^2 .

It is a cyclic number.

It is not a de Polignac number, because 816000481 - 2²¹ = 813903329 is a prime.

It is a super-2 number, since 2×816000481² = 1331713569984462722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816000421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408000240 + 408000241.

It is an arithmetic number, because the mean of its divisors is an integer number (408000241).

Almost surely, 2^816000481 is an apocalyptic number.

It is an amenable number.

816000481 is a deficient number, since it is larger than the sum of its proper divisors (1).

816000481 is an equidigital number, since it uses as much as digits as its factorization.

816000481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 816000481 is about 28565.7221333542. The cubic root of 816000481 is about 934.4659292813.

The spelling of 816000481 in words is "eight hundred sixteen million, four hundred eighty-one", and thus it is an aban number.