1663880982 has 16 divisors (see below), whose sum is σ = 3332517552. Its totient is φ = 553834400.

The previous prime is 1663880971. The next prime is 1663880987. The reversal of 1663880982 is 2890883661.

It is a super-2 number, since 2×1663880982² = 5536999844522568648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663880987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193593 + ... + 202004.

It is an arithmetic number, because the mean of its divisors is an integer number (208282347).

Almost surely, 2^1663880982 is an apocalyptic number.

1663880982 is an abundant number, since it is smaller than the sum of its proper divisors (1668636570).

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

1663880982 is a wasteful number, since it uses less digits than its factorization.

1663880982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396303.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1663880982 is about 40790.6972482697. The cubic root of 1663880982 is about 1184.9701742569.

The spelling of 1663880982 in words is "one billion, six hundred sixty-three million, eight hundred eighty thousand, nine hundred eighty-two".