1816296457 has 2 divisors, whose sum is σ = 1816296458. Its totient is φ = 1816296456.

The previous prime is 1816296451. The next prime is 1816296497. The reversal of 1816296457 is 7546926181.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1555829136 + 260467321 = 39444^2 + 16139^2 .

It is an emirp because it is prime and its reverse (7546926181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1816296457 - 2⁷ = 1816296329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1816296457.

It is not a weakly prime, because it can be changed into another prime (1816296451) 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 as a sum of consecutive naturals, namely, 908148228 + 908148229.

It is an arithmetic number, because the mean of its divisors is an integer number (908148229).

Almost surely, 2^1816296457 is an apocalyptic number.

It is an amenable number.

1816296457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816296457 is an equidigital number, since it uses as much as digits as its factorization.

1816296457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 1816296457 is about 42618.0297174799. The cubic root of 1816296457 is about 1220.1004255323.

The spelling of 1816296457 in words is "one billion, eight hundred sixteen million, two hundred ninety-six thousand, four hundred fifty-seven".