1663914108 has 12 divisors (see below), whose sum is σ = 3882466280. Its totient is φ = 554638032.

The previous prime is 1663914101. The next prime is 1663914143. The reversal of 1663914108 is 8014193661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1663914108² = 5537220317602871328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663914101) 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, 69329743 + ... + 69329766.

Almost surely, 2^1663914108 is an apocalyptic number.

It is an amenable number.

1663914108 is an abundant number, since it is smaller than the sum of its proper divisors (2218552172).

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

1663914108 is a wasteful number, since it uses less digits than its factorization.

1663914108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138659516 (or 138659514 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1663914108 is about 40791.1032947137. The cubic root of 1663914108 is about 1184.9780380127.

The spelling of 1663914108 in words is "one billion, six hundred sixty-three million, nine hundred fourteen thousand, one hundred eight".