1663286128 has 20 divisors (see below), whose sum is σ = 3682990960. Its totient is φ = 712836864.

The previous prime is 1663286117. The next prime is 1663286129. The reversal of 1663286128 is 8216823661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663286129) 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, 7425273 + ... + 7425496.

It is an arithmetic number, because the mean of its divisors is an integer number (184149548).

Almost surely, 2^1663286128 is an apocalyptic number.

It is an amenable number.

1663286128 is an abundant number, since it is smaller than the sum of its proper divisors (2019704832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663286128 is a wasteful number, since it uses less digits than its factorization.

1663286128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850784 (or 14850778 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 1663286128 is about 40783.4050564687. The cubic root of 1663286128 is about 1184.8289445509.

The spelling of 1663286128 in words is "one billion, six hundred sixty-three million, two hundred eighty-six thousand, one hundred twenty-eight".