1641144097 has 2 divisors, whose sum is σ = 1641144098. Its totient is φ = 1641144096.

The previous prime is 1641144091. The next prime is 1641144161. The reversal of 1641144097 is 7904411461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1160833041 + 480311056 = 34071^2 + 21916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641144097 - 2⁷ = 1641143969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641144091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820572048 + 820572049.

It is an arithmetic number, because the mean of its divisors is an integer number (820572049).

Almost surely, 2^1641144097 is an apocalyptic number.

It is an amenable number.

1641144097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641144097 is an equidigital number, since it uses as much as digits as its factorization.

1641144097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1641144097 is about 40511.0367307478. The cubic root of 1641144097 is about 1179.5478726057.

The spelling of 1641144097 in words is "one billion, six hundred forty-one million, one hundred forty-four thousand, ninety-seven".