1641002173 has 2 divisors, whose sum is σ = 1641002174. Its totient is φ = 1641002172.

The previous prime is 1641002119. The next prime is 1641002191. The reversal of 1641002173 is 3712001461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1429066809 + 211935364 = 37803^2 + 14558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641002173 - 2¹⁷ = 1640871101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641002273) 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 as a sum of consecutive naturals, namely, 820501086 + 820501087.

It is an arithmetic number, because the mean of its divisors is an integer number (820501087).

Almost surely, 2^1641002173 is an apocalyptic number.

It is an amenable number.

1641002173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641002173 is an equidigital number, since it uses as much as digits as its factorization.

1641002173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1641002173 is about 40509.2850220786. The cubic root of 1641002173 is about 1179.5138697052.

The spelling of 1641002173 in words is "one billion, six hundred forty-one million, two thousand, one hundred seventy-three".