1416663649 has 2 divisors, whose sum is σ = 1416663650. Its totient is φ = 1416663648.

The previous prime is 1416663607. The next prime is 1416663667. The reversal of 1416663649 is 9463666141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204437025 + 212226624 = 34705^2 + 14568^2 .

It is an emirp because it is prime and its reverse (9463666141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1416663649 - 2²⁷ = 1282445921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1416663599 and 1416663608.

It is not a weakly prime, because it can be changed into another prime (1416663349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708331824 + 708331825.

It is an arithmetic number, because the mean of its divisors is an integer number (708331825).

Almost surely, 2^1416663649 is an apocalyptic number.

It is an amenable number.

1416663649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1416663649 is an equidigital number, since it uses as much as digits as its factorization.

1416663649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 1416663649 is about 37638.5925480749. The cubic root of 1416663649 is about 1123.1098860144.

It can be divided in two parts, 14166 and 63649, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 1416663649 in words is "one billion, four hundred sixteen million, six hundred sixty-three thousand, six hundred forty-nine".