1663143188 has 48 divisors (see below), whose sum is σ = 3586800000. Its totient is φ = 658782720.

The previous prime is 1663143137. The next prime is 1663143193. The reversal of 1663143188 is 8813413661.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16313 + ... + 59936.

It is an arithmetic number, because the mean of its divisors is an integer number (74725000).

Almost surely, 2^1663143188 is an apocalyptic number.

It is an amenable number.

1663143188 is an abundant number, since it is smaller than the sum of its proper divisors (1923656812).

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

1663143188 is a wasteful number, since it uses less digits than its factorization.

1663143188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76320 (or 76318 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 1663143188 is about 40781.6525903500. The cubic root of 1663143188 is about 1184.7950028459.

The spelling of 1663143188 in words is "one billion, six hundred sixty-three million, one hundred forty-three thousand, one hundred eighty-eight".