1641324664 has 64 divisors (see below), whose sum is σ = 3558744000. Its totient is φ = 695153664.

The previous prime is 1641324637. The next prime is 1641324677. The reversal of 1641324664 is 4664231461.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2677222 + ... + 2677834.

It is an arithmetic number, because the mean of its divisors is an integer number (55605375).

Almost surely, 2^1641324664 is an apocalyptic number.

1641324664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1641324664 is an abundant number, since it is smaller than the sum of its proper divisors (1917419336).

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

1641324664 is a wasteful number, since it uses less digits than its factorization.

1641324664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1108 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 1641324664 is about 40513.2652843485. The cubic root of 1641324664 is about 1179.5911309664.

The spelling of 1641324664 in words is "one billion, six hundred forty-one million, three hundred twenty-four thousand, six hundred sixty-four".