1663522146 has 96 divisors (see below), whose sum is σ = 4349112768. Its totient is φ = 452718720.

The previous prime is 1663522129. The next prime is 1663522171. The reversal of 1663522146 is 6412253661.

1663522146 is a `hidden beast` number, since 1 + 6 + 635 + 2 + 2 + 14 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1663522146.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86505 + ... + 103971.

It is an arithmetic number, because the mean of its divisors is an integer number (45303258).

Almost surely, 2^1663522146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663522146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2174556384).

1663522146 is an abundant number, since it is smaller than the sum of its proper divisors (2685590622).

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

1663522146 is a wasteful number, since it uses less digits than its factorization.

1663522146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17536 (or 17533 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1663522146 is about 40786.2985082000. The cubic root of 1663522146 is about 1184.8849837629.

It can be divided in two parts, 16635 and 22146, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 1663522146 in words is "one billion, six hundred sixty-three million, five hundred twenty-two thousand, one hundred forty-six".