1664503324 has 24 divisors (see below), whose sum is σ = 3197941488. Its totient is φ = 751770240.

The previous prime is 1664503241. The next prime is 1664503327. The reversal of 1664503324 is 4233054661.

It is a self number, because there is not a number n which added to its sum of digits gives 1664503324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664503327) 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, 113569 + ... + 127384.

It is an arithmetic number, because the mean of its divisors is an integer number (133247562).

Almost surely, 2^1664503324 is an apocalyptic number.

It is an amenable number.

1664503324 is a deficient number, since it is larger than the sum of its proper divisors (1533438164).

1664503324 is a wasteful number, since it uses less digits than its factorization.

1664503324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241125 (or 241123 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1664503324 is about 40798.3250146375. The cubic root of 1664503324 is about 1185.1178941142.

Adding to 1664503324 its reverse (4233054661), we get a palindrome (5897557985).

The spelling of 1664503324 in words is "one billion, six hundred sixty-four million, five hundred three thousand, three hundred twenty-four".