1641304401 has 16 divisors (see below), whose sum is σ = 2389652928. Its totient is φ = 993771200.

The previous prime is 1641304397. The next prime is 1641304409. The reversal of 1641304401 is 1044031461.

It is a cyclic number.

It is not a de Polignac number, because 1641304401 - 2² = 1641304397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641304409) by changing a digit.

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, 11575 + ... + 58451.

It is an arithmetic number, because the mean of its divisors is an integer number (149353308).

Almost surely, 2^1641304401 is an apocalyptic number.

1641304401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1641304401 is a deficient number, since it is larger than the sum of its proper divisors (748348527).

1641304401 is a wasteful number, since it uses less digits than its factorization.

1641304401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47952.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1641304401 is about 40513.0152049931. The cubic root of 1641304401 is about 1179.5862767260.

Adding to 1641304401 its reverse (1044031461), we get a palindrome (2685335862).

The spelling of 1641304401 in words is "one billion, six hundred forty-one million, three hundred four thousand, four hundred one".