1660450499 has 2 divisors, whose sum is σ = 1660450500. Its totient is φ = 1660450498.

The previous prime is 1660450471. The next prime is 1660450553. The reversal of 1660450499 is 9940540661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660450499 - 2⁸ = 1660450243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660450699) 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, 830225249 + 830225250.

It is an arithmetic number, because the mean of its divisors is an integer number (830225250).

Almost surely, 2^1660450499 is an apocalyptic number.

1660450499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660450499 is an equidigital number, since it uses as much as digits as its factorization.

1660450499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 1660450499 is about 40748.6257314280. The cubic root of 1660450499 is about 1184.1552488000.

The spelling of 1660450499 in words is "one billion, six hundred sixty million, four hundred fifty thousand, four hundred ninety-nine".