538380457 has 2 divisors, whose sum is σ = 538380458. Its totient is φ = 538380456.

The previous prime is 538380431. The next prime is 538380467. The reversal of 538380457 is 754083835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538054416 + 326041 = 23196^2 + 571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538380457 is a prime.

It is not a weakly prime, because it can be changed into another prime (538380407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269190228 + 269190229.

It is an arithmetic number, because the mean of its divisors is an integer number (269190229).

Almost surely, 2^538380457 is an apocalyptic number.

It is an amenable number.

538380457 is a deficient number, since it is larger than the sum of its proper divisors (1).

538380457 is an equidigital number, since it uses as much as digits as its factorization.

538380457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 538380457 is about 23203.0268930586. The cubic root of 538380457 is about 813.5103741890.

The spelling of 538380457 in words is "five hundred thirty-eight million, three hundred eighty thousand, four hundred fifty-seven".