1660663136 has 24 divisors (see below), whose sum is σ = 3566652264. Its totient is φ = 754846720.

The previous prime is 1660663127. The next prime is 1660663141. The reversal of 1660663136 is 6313660661.

It is a self number, because there is not a number n which added to its sum of digits gives 1660663136.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2358545 + ... + 2359248.

It is an arithmetic number, because the mean of its divisors is an integer number (148610511).

Almost surely, 2^1660663136 is an apocalyptic number.

1660663136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1660663136 is an abundant number, since it is smaller than the sum of its proper divisors (1905989128).

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

1660663136 is a wasteful number, since it uses less digits than its factorization.

1660663136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717814 (or 4717806 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 1660663136 is about 40751.2347788383. The cubic root of 1660663136 is about 1184.2057942137.

The spelling of 1660663136 in words is "one billion, six hundred sixty million, six hundred sixty-three thousand, one hundred thirty-six".