1664402299 has 8 divisors (see below), whose sum is σ = 2002288640. Its totient is φ = 1351544616.

The previous prime is 1664402297. The next prime is 1664402321. The reversal of 1664402299 is 9922044661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1664402299 - 2¹ = 1664402297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664402293) 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 in 7 ways as a sum of consecutive naturals, for example, 6257019 + ... + 6257284.

It is an arithmetic number, because the mean of its divisors is an integer number (250286080).

Almost surely, 2^1664402299 is an apocalyptic number.

1664402299 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1664402299 is a deficient number, since it is larger than the sum of its proper divisors (337886341).

1664402299 is a wasteful number, since it uses less digits than its factorization.

1664402299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12514329.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1664402299 is about 40797.0868935516. The cubic root of 1664402299 is about 1185.0939172005.

The spelling of 1664402299 in words is "one billion, six hundred sixty-four million, four hundred two thousand, two hundred ninety-nine".