1641500023 has 2 divisors, whose sum is σ = 1641500024. Its totient is φ = 1641500022.

The previous prime is 1641500009. The next prime is 1641500033. The reversal of 1641500023 is 3200051461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641500023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641499967 and 1641500003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641500033) 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, 820750011 + 820750012.

It is an arithmetic number, because the mean of its divisors is an integer number (820750012).

Almost surely, 2^1641500023 is an apocalyptic number.

1641500023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641500023 is an equidigital number, since it uses as much as digits as its factorization.

1641500023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1641500023 is about 40515.4294436083. The cubic root of 1641500023 is about 1179.6331386121.

Adding to 1641500023 its reverse (3200051461), we get a palindrome (4841551484).

The spelling of 1641500023 in words is "one billion, six hundred forty-one million, five hundred thousand, twenty-three".