1663982733 has 8 divisors (see below), whose sum is σ = 2535592768. Its totient is φ = 950847264.

The previous prime is 1663982731. The next prime is 1663982897. The reversal of 1663982733 is 3372893661.

1663982733 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1663982733 - 2¹ = 1663982731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663982731) 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, 39618616 + ... + 39618657.

It is an arithmetic number, because the mean of its divisors is an integer number (316949096).

Almost surely, 2^1663982733 is an apocalyptic number.

It is an amenable number.

1663982733 is a deficient number, since it is larger than the sum of its proper divisors (871610035).

1663982733 is an equidigital number, since it uses as much as digits as its factorization.

1663982733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79237283.

The product of its digits is 979776, while the sum is 48.

The square root of 1663982733 is about 40791.9444621116. The cubic root of 1663982733 is about 1184.9943285171.

The spelling of 1663982733 in words is "one billion, six hundred sixty-three million, nine hundred eighty-two thousand, seven hundred thirty-three".