38185013 has 2 divisors, whose sum is σ = 38185014. Its totient is φ = 38185012.

The previous prime is 38184997. The next prime is 38185019. The reversal of 38185013 is 31058183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28494244 + 9690769 = 5338^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 38185013 - 2⁴ = 38184997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38185019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19092506 + 19092507.

It is an arithmetic number, because the mean of its divisors is an integer number (19092507).

Almost surely, 2^38185013 is an apocalyptic number.

It is an amenable number.

38185013 is a deficient number, since it is larger than the sum of its proper divisors (1).

38185013 is an equidigital number, since it uses as much as digits as its factorization.

38185013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 38185013 is about 6179.4023173767. The cubic root of 38185013 is about 336.7422796324.

The spelling of 38185013 in words is "thirty-eight million, one hundred eighty-five thousand, thirteen".