1411661509 has 2 divisors, whose sum is σ = 1411661510. Its totient is φ = 1411661508.

The previous prime is 1411661441. The next prime is 1411661533. The reversal of 1411661509 is 9051661141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1367372484 + 44289025 = 36978^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1411661509 - 2⁹ = 1411660997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1411661579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705830754 + 705830755.

It is an arithmetic number, because the mean of its divisors is an integer number (705830755).

Almost surely, 2^1411661509 is an apocalyptic number.

It is an amenable number.

1411661509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1411661509 is an equidigital number, since it uses as much as digits as its factorization.

1411661509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1411661509 is about 37572.0841716293. The cubic root of 1411661509 is about 1121.7864530575.

It can be divided in two parts, 14116 and 61509, that added together give a square (75625 = 275²).

The spelling of 1411661509 in words is "one billion, four hundred eleven million, six hundred sixty-one thousand, five hundred nine".