1663041886 has 32 divisors (see below), whose sum is σ = 2817073152. Its totient is φ = 729660960.

The previous prime is 1663041871. The next prime is 1663041911. The reversal of 1663041886 is 6881403661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95335 + ... + 111421.

It is an arithmetic number, because the mean of its divisors is an integer number (88033536).

Almost surely, 2^1663041886 is an apocalyptic number.

1663041886 is a deficient number, since it is larger than the sum of its proper divisors (1154031266).

1663041886 is a wasteful number, since it uses less digits than its factorization.

1663041886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16264.

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

The square root of 1663041886 is about 40780.4105668396. The cubic root of 1663041886 is about 1184.7709470819.

The spelling of 1663041886 in words is "one billion, six hundred sixty-three million, forty-one thousand, eight hundred eighty-six".