538773791 has 2 divisors, whose sum is σ = 538773792. Its totient is φ = 538773790.

The previous prime is 538773731. The next prime is 538773797. The reversal of 538773791 is 197377835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538773791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538773797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269386895 + 269386896.

It is an arithmetic number, because the mean of its divisors is an integer number (269386896).

Almost surely, 2^538773791 is an apocalyptic number.

538773791 is a deficient number, since it is larger than the sum of its proper divisors (1).

538773791 is an equidigital number, since it uses as much as digits as its factorization.

538773791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 50.

The square root of 538773791 is about 23211.5012655364. The cubic root of 538773791 is about 813.7084394494.

The spelling of 538773791 in words is "five hundred thirty-eight million, seven hundred seventy-three thousand, seven hundred ninety-one".