504381649 has 2 divisors, whose sum is σ = 504381650. Its totient is φ = 504381648.

The previous prime is 504381617. The next prime is 504381671. The reversal of 504381649 is 946183405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323748049 + 180633600 = 17993^2 + 13440^2 .

It is a cyclic number.

It is not a de Polignac number, because 504381649 - 2⁵ = 504381617 is a prime.

It is not a weakly prime, because it can be changed into another prime (504382649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252190824 + 252190825.

It is an arithmetic number, because the mean of its divisors is an integer number (252190825).

Almost surely, 2^504381649 is an apocalyptic number.

It is an amenable number.

504381649 is a deficient number, since it is larger than the sum of its proper divisors (1).

504381649 is an equidigital number, since it uses as much as digits as its factorization.

504381649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 504381649 is about 22458.4427109272. The cubic root of 504381649 is about 796.0122643372.

The spelling of 504381649 in words is "five hundred four million, three hundred eighty-one thousand, six hundred forty-nine".