1644141343 has 12 divisors (see below), whose sum is σ = 1782320448. Its totient is φ = 1515983040.

The previous prime is 1644141337. The next prime is 1644141347. The reversal of 1644141343 is 3431414461.

It is not a de Polignac number, because 1644141343 - 2²¹ = 1642044191 is a prime.

It is a super-3 number, since 3×1644141343³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644141347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162571 + ... + 172387.

It is an arithmetic number, because the mean of its divisors is an integer number (148526704).

Almost surely, 2^1644141343 is an apocalyptic number.

1644141343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1644141343 is a deficient number, since it is larger than the sum of its proper divisors (138179105).

1644141343 is an equidigital number, since it uses as much as digits as its factorization.

1644141343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10834 (or 10821 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 1644141343 is about 40548.0128119739. The cubic root of 1644141343 is about 1180.2655112096.

The spelling of 1644141343 in words is "one billion, six hundred forty-four million, one hundred forty-one thousand, three hundred forty-three".