1663120210 has 8 divisors (see below), whose sum is σ = 2993616396. Its totient is φ = 665248080.

The previous prime is 1663120181. The next prime is 1663120223. The reversal of 1663120210 is 120213661.

It can be written as a sum of positive squares in 2 ways, for example, as 1553226921 + 109893289 = 39411^2 + 10483^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83156001 + ... + 83156020.

Almost surely, 2^1663120210 is an apocalyptic number.

1663120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663120210 is a deficient number, since it is larger than the sum of its proper divisors (1330496186).

1663120210 is a wasteful number, since it uses less digits than its factorization.

1663120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166312028.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1663120210 is about 40781.3708695527. The cubic root of 1663120210 is about 1184.7895464416.

Adding to 1663120210 its reverse (120213661), we get a palindrome (1783333871).

The spelling of 1663120210 in words is "one billion, six hundred sixty-three million, one hundred twenty thousand, two hundred ten".