1663420099 has 32 divisors (see below), whose sum is σ = 1967431680. Its totient is φ = 1391095200.

The previous prime is 1663420093. The next prime is 1663420139. The reversal of 1663420099 is 9900243661.

It is not a de Polignac number, because 1663420099 - 2³ = 1663420091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663420091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 700384 + ... + 702754.

It is an arithmetic number, because the mean of its divisors is an integer number (61482240).

Almost surely, 2^1663420099 is an apocalyptic number.

1663420099 is a deficient number, since it is larger than the sum of its proper divisors (304011581).

1663420099 is a wasteful number, since it uses less digits than its factorization.

1663420099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 1663420099 is about 40785.0474929232. The cubic root of 1663420099 is about 1184.8607547637.

The spelling of 1663420099 in words is "one billion, six hundred sixty-three million, four hundred twenty thousand, ninety-nine".