1450189691 has 2 divisors, whose sum is σ = 1450189692. Its totient is φ = 1450189690.

The previous prime is 1450189669. The next prime is 1450189711. The reversal of 1450189691 is 1969810541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1450189691 - 2¹⁰ = 1450188667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1450189591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725094845 + 725094846.

It is an arithmetic number, because the mean of its divisors is an integer number (725094846).

Almost surely, 2^1450189691 is an apocalyptic number.

1450189691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1450189691 is an equidigital number, since it uses as much as digits as its factorization.

1450189691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1450189691 is about 38081.3562127191. The cubic root of 1450189691 is about 1131.9005505890.

The spelling of 1450189691 in words is "one billion, four hundred fifty million, one hundred eighty-nine thousand, six hundred ninety-one".