1641334144 has 32 divisors (see below), whose sum is σ = 3271825440. Its totient is φ = 820170240.

The previous prime is 1641334111. The next prime is 1641334147. The reversal of 1641334144 is 4414331461.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641334147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302334 + ... + 307714.

It is an arithmetic number, because the mean of its divisors is an integer number (102244545).

Almost surely, 2^1641334144 is an apocalyptic number.

It is an amenable number.

1641334144 is a deficient number, since it is larger than the sum of its proper divisors (1630491296).

1641334144 is an equidigital number, since it uses as much as digits as its factorization.

1641334144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778 (or 7766 counting only the distinct ones).

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

The square root of 1641334144 is about 40513.3822828951. The cubic root of 1641334144 is about 1179.5934019984.

The spelling of 1641334144 in words is "one billion, six hundred forty-one million, three hundred thirty-four thousand, one hundred forty-four".