1413405781 has 2 divisors, whose sum is σ = 1413405782. Its totient is φ = 1413405780.

The previous prime is 1413405757. The next prime is 1413405787. The reversal of 1413405781 is 1875043141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002735556 + 410670225 = 31666^2 + 20265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1413405781 - 2¹³ = 1413397589 is a prime.

It is a super-2 number, since 2×1413405781² = 3995431803528439922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1413405787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 706702890 + 706702891.

It is an arithmetic number, because the mean of its divisors is an integer number (706702891).

Almost surely, 2^1413405781 is an apocalyptic number.

It is an amenable number.

1413405781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1413405781 is an equidigital number, since it uses as much as digits as its factorization.

1413405781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1413405781 is about 37595.2893458742. The cubic root of 1413405781 is about 1122.2482954396.

The spelling of 1413405781 in words is "one billion, four hundred thirteen million, four hundred five thousand, seven hundred eighty-one".