1663284237 has 8 divisors (see below), whose sum is σ = 2218105536. Its totient is φ = 1108659552.

The previous prime is 1663284209. The next prime is 1663284239. The reversal of 1663284237 is 7324823661.

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

It is not a de Polignac number, because 1663284237 - 2⁶ = 1663284173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663284239) 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, 28128 + ... + 64169.

It is an arithmetic number, because the mean of its divisors is an integer number (277263192).

Almost surely, 2^1663284237 is an apocalyptic number.

It is an amenable number.

1663284237 is a deficient number, since it is larger than the sum of its proper divisors (554821299).

1663284237 is an equidigital number, since it uses as much as digits as its factorization.

1663284237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98307.

The product of its digits is 290304, while the sum is 42.

The square root of 1663284237 is about 40783.3818730129. The cubic root of 1663284237 is about 1184.8284955376.

The spelling of 1663284237 in words is "one billion, six hundred sixty-three million, two hundred eighty-four thousand, two hundred thirty-seven".