1641285241 has 2 divisors, whose sum is σ = 1641285242. Its totient is φ = 1641285240.

The previous prime is 1641285197. The next prime is 1641285253. The reversal of 1641285241 is 1425821461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1444304016 + 196981225 = 38004^2 + 14035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641285241 - 2²³ = 1632896633 is a prime.

It is a super-3 number, since 3×1641285241³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1641285197 and 1641285206.

It is not a weakly prime, because it can be changed into another prime (1641285271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820642620 + 820642621.

It is an arithmetic number, because the mean of its divisors is an integer number (820642621).

Almost surely, 2^1641285241 is an apocalyptic number.

It is an amenable number.

1641285241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641285241 is an equidigital number, since it uses as much as digits as its factorization.

1641285241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 1641285241 is about 40512.7787370849. The cubic root of 1641285241 is about 1179.5816866855.

The spelling of 1641285241 in words is "one billion, six hundred forty-one million, two hundred eighty-five thousand, two hundred forty-one".