1814647481 has 2 divisors, whose sum is σ = 1814647482. Its totient is φ = 1814647480.

The previous prime is 1814647469. The next prime is 1814647493. The reversal of 1814647481 is 1847464181.

It is a balanced prime because it is at equal distance from previous prime (1814647469) and next prime (1814647493).

It can be written as a sum of positive squares in only one way, i.e., 1611299881 + 203347600 = 40141^2 + 14260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1814647481 is a prime.

It is a super-2 number, since 2×1814647481² = 6585890960599290722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1814647411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 907323740 + 907323741.

It is an arithmetic number, because the mean of its divisors is an integer number (907323741).

Almost surely, 2^1814647481 is an apocalyptic number.

It is an amenable number.

1814647481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1814647481 is an equidigital number, since it uses as much as digits as its factorization.

1814647481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 44.

The square root of 1814647481 is about 42598.6793339887. The cubic root of 1814647481 is about 1219.7310795339.

The spelling of 1814647481 in words is "one billion, eight hundred fourteen million, six hundred forty-seven thousand, four hundred eighty-one".