1663381108 has 6 divisors (see below), whose sum is σ = 2910916946. Its totient is φ = 831690552.

The previous prime is 1663381079. The next prime is 1663381127. The reversal of 1663381108 is 8011833661.

It can be written as a sum of positive squares in only one way, i.e., 1662845284 + 535824 = 40778^2 + 732^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207922635 + ... + 207922642.

Almost surely, 2^1663381108 is an apocalyptic number.

It is an amenable number.

1663381108 is a deficient number, since it is larger than the sum of its proper divisors (1247535838).

1663381108 is a wasteful number, since it uses less digits than its factorization.

1663381108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415845281 (or 415845279 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1663381108 is about 40784.5694840586. The cubic root of 1663381108 is about 1184.8514968765.

The spelling of 1663381108 in words is "one billion, six hundred sixty-three million, three hundred eighty-one thousand, one hundred eight".