1663629992 has 16 divisors (see below), whose sum is σ = 3123374100. Its totient is φ = 830730240.

The previous prime is 1663629991. The next prime is 1663630061. The reversal of 1663629992 is 2999263661.

It can be written as a sum of positive squares in 2 ways, for example, as 1662519076 + 1110916 = 40774^2 + 1054^2 .

It is not an unprimeable number, because it can be changed into a prime (1663629991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129059 + ... + 141362.

Almost surely, 2^1663629992 is an apocalyptic number.

It is an amenable number.

1663629992 is a deficient number, since it is larger than the sum of its proper divisors (1459744108).

1663629992 is a wasteful number, since it uses less digits than its factorization.

1663629992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271196 (or 271192 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 53.

The square root of 1663629992 is about 40787.6205729140. The cubic root of 1663629992 is about 1184.9105885407.

The spelling of 1663629992 in words is "one billion, six hundred sixty-three million, six hundred twenty-nine thousand, nine hundred ninety-two".