538907791 has 2 divisors, whose sum is σ = 538907792. Its totient is φ = 538907790.

The previous prime is 538907753. The next prime is 538907801. The reversal of 538907791 is 197709835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538907791 - 2¹¹ = 538905743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538907741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269453895 + 269453896.

It is an arithmetic number, because the mean of its divisors is an integer number (269453896).

Almost surely, 2^538907791 is an apocalyptic number.

538907791 is a deficient number, since it is larger than the sum of its proper divisors (1).

538907791 is an equidigital number, since it uses as much as digits as its factorization.

538907791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 538907791 is about 23214.3875861501. The cubic root of 538907791 is about 813.7758937901.

The spelling of 538907791 in words is "five hundred thirty-eight million, nine hundred seven thousand, seven hundred ninety-one".