1664324016 has 20 divisors (see below), whose sum is σ = 4299503832. Its totient is φ = 554774656.

The previous prime is 1664323897. The next prime is 1664324017. The reversal of 1664324016 is 6104234661.

It is not an unprimeable number, because it can be changed into a prime (1664324017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17336661 + ... + 17336756.

Almost surely, 2^1664324016 is an apocalyptic number.

1664324016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1664324016 is an abundant number, since it is smaller than the sum of its proper divisors (2635179816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664324016 is a wasteful number, since it uses less digits than its factorization.

1664324016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34673428 (or 34673422 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1664324016 is about 40796.1274632777. The cubic root of 1664324016 is about 1185.0753371249.

Adding to 1664324016 its reverse (6104234661), we get a palindrome (7768558677).

The spelling of 1664324016 in words is "one billion, six hundred sixty-four million, three hundred twenty-four thousand, sixteen".