1641601311 has 128 divisors (see below), whose sum is σ = 2969763840. Its totient is φ = 783820800.

The previous prime is 1641601279. The next prime is 1641601321. The reversal of 1641601311 is 1131061461.

It is not a de Polignac number, because 1641601311 - 2⁵ = 1641601279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641601321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7779996 + ... + 7780206.

It is an arithmetic number, because the mean of its divisors is an integer number (23201280).

Almost surely, 2^1641601311 is an apocalyptic number.

1641601311 is a deficient number, since it is larger than the sum of its proper divisors (1328162529).

1641601311 is a wasteful number, since it uses less digits than its factorization.

1641601311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1641601311 is about 40516.6794172474. The cubic root of 1641601311 is about 1179.6574010189.

Adding to 1641601311 its reverse (1131061461), we get a palindrome (2772662772).

The spelling of 1641601311 in words is "one billion, six hundred forty-one million, six hundred one thousand, three hundred eleven".