1663922755 has 16 divisors (see below), whose sum is σ = 2179021824. Its totient is φ = 1209683680.

The previous prime is 1663922749. The next prime is 1663922759. The reversal of 1663922755 is 5572293661.

It is not a de Polignac number, because 1663922755 - 2¹⁵ = 1663889987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663922759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272142 + ... + 278188.

It is an arithmetic number, because the mean of its divisors is an integer number (136188864).

Almost surely, 2^1663922755 is an apocalyptic number.

1663922755 is a deficient number, since it is larger than the sum of its proper divisors (515099069).

1663922755 is a wasteful number, since it uses less digits than its factorization.

1663922755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11066.

The product of its digits is 680400, while the sum is 46.

The square root of 1663922755 is about 40791.2092858253. The cubic root of 1663922755 is about 1184.9800907003.

The spelling of 1663922755 in words is "one billion, six hundred sixty-three million, nine hundred twenty-two thousand, seven hundred fifty-five".