1644141107 has 16 divisors (see below), whose sum is σ = 1928489472. Its totient is φ = 1372640640.

The previous prime is 1644141101. The next prime is 1644141133. The reversal of 1644141107 is 7011414461.

It is not a de Polignac number, because 1644141107 - 2⁴ = 1644141091 is a prime.

It is a super-3 number, since 3×1644141107³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1644141107.

It is not an unprimeable number, because it can be changed into a prime (1644141101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21323 + ... + 61179.

It is an arithmetic number, because the mean of its divisors is an integer number (120530592).

Almost surely, 2^1644141107 is an apocalyptic number.

1644141107 is a deficient number, since it is larger than the sum of its proper divisors (284348365).

1644141107 is an equidigital number, since it uses as much as digits as its factorization.

1644141107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40018.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1644141107 is about 40548.0099018435. The cubic root of 1644141107 is about 1180.2654547378.

Adding to 1644141107 its reverse (7011414461), we get a palindrome (8655555568).

The spelling of 1644141107 in words is "one billion, six hundred forty-four million, one hundred forty-one thousand, one hundred seven".