1663135323 has 8 divisors (see below), whose sum is σ = 2218117200. Its totient is φ = 1108455168.

The previous prime is 1663135321. The next prime is 1663135349. The reversal of 1663135323 is 3235313661.

It is a happy number.

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

It is not a de Polignac number, because 1663135323 - 2¹ = 1663135321 is a prime.

It is a super-2 number, since 2×1663135323² = 5532038205220628658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663135321) 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, 62238 + ... + 84851.

It is an arithmetic number, because the mean of its divisors is an integer number (277264650).

Almost surely, 2^1663135323 is an apocalyptic number.

1663135323 is a deficient number, since it is larger than the sum of its proper divisors (554981877).

1663135323 is a wasteful number, since it uses less digits than its factorization.

1663135323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150861.

The product of its digits is 29160, while the sum is 33.

The square root of 1663135323 is about 40781.5561620691. The cubic root of 1663135323 is about 1184.7931352121.

Adding to 1663135323 its reverse (3235313661), we get a palindrome (4898448984).

The spelling of 1663135323 in words is "one billion, six hundred sixty-three million, one hundred thirty-five thousand, three hundred twenty-three".