38468509 has 2 divisors, whose sum is σ = 38468510. Its totient is φ = 38468508.

The previous prime is 38468461. The next prime is 38468527. The reversal of 38468509 is 90586483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20448484 + 18020025 = 4522^2 + 4245^2 .

It is a cyclic number.

It is not a de Polignac number, because 38468509 - 2⁹ = 38467997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38438509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19234254 + 19234255.

It is an arithmetic number, because the mean of its divisors is an integer number (19234255).

Almost surely, 2^38468509 is an apocalyptic number.

It is an amenable number.

38468509 is a deficient number, since it is larger than the sum of its proper divisors (1).

38468509 is an equidigital number, since it uses as much as digits as its factorization.

38468509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 38468509 is about 6202.2986867773. The cubic root of 38468509 is about 337.5735813961.

The spelling of 38468509 in words is "thirty-eight million, four hundred sixty-eight thousand, five hundred nine".