1641263527 has 2 divisors, whose sum is σ = 1641263528. Its totient is φ = 1641263526.

The previous prime is 1641263461. The next prime is 1641263531. The reversal of 1641263527 is 7253621461.

It is a strong prime.

It is an emirp because it is prime and its reverse (7253621461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641263527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641263587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820631763 + 820631764.

It is an arithmetic number, because the mean of its divisors is an integer number (820631764).

Almost surely, 2^1641263527 is an apocalyptic number.

1641263527 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641263527 is an equidigital number, since it uses as much as digits as its factorization.

1641263527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 1641263527 is about 40512.5107466817. The cubic root of 1641263527 is about 1179.5764847561.

Adding to 1641263527 its reverse (7253621461), we get a palindrome (8894884988).

The spelling of 1641263527 in words is "one billion, six hundred forty-one million, two hundred sixty-three thousand, five hundred twenty-seven".