1413454781 has 2 divisors, whose sum is σ = 1413454782. Its totient is φ = 1413454780.

The previous prime is 1413454769. The next prime is 1413454789. The reversal of 1413454781 is 1874543141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413384025 + 70756 = 37595^2 + 266^2 .

It is an emirp because it is prime and its reverse (1874543141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1413454781 - 2¹⁸ = 1413192637 is a prime.

It is a super-2 number, since 2×1413454781² = 3995708835863515922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1413454789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 706727390 + 706727391.

It is an arithmetic number, because the mean of its divisors is an integer number (706727391).

Almost surely, 2^1413454781 is an apocalyptic number.

It is an amenable number.

1413454781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1413454781 is an equidigital number, since it uses as much as digits as its factorization.

1413454781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 1413454781 is about 37595.9410176152. The cubic root of 1413454781 is about 1122.2612640039.

The spelling of 1413454781 in words is "one billion, four hundred thirteen million, four hundred fifty-four thousand, seven hundred eighty-one".