501934649 has 2 divisors, whose sum is σ = 501934650. Its totient is φ = 501934648.

The previous prime is 501934633. The next prime is 501934679. The reversal of 501934649 is 946439105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411075625 + 90859024 = 20275^2 + 9532^2 .

It is a cyclic number.

It is not a de Polignac number, because 501934649 - 2⁴ = 501934633 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (501934679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250967324 + 250967325.

It is an arithmetic number, because the mean of its divisors is an integer number (250967325).

Almost surely, 2^501934649 is an apocalyptic number.

It is an amenable number.

501934649 is a deficient number, since it is larger than the sum of its proper divisors (1).

501934649 is an equidigital number, since it uses as much as digits as its factorization.

501934649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 501934649 is about 22403.8980760045. The cubic root of 501934649 is about 794.7228964496.

The spelling of 501934649 in words is "five hundred one million, nine hundred thirty-four thousand, six hundred forty-nine".