38781373 has 2 divisors, whose sum is σ = 38781374. Its totient is φ = 38781372.

The previous prime is 38781317. The next prime is 38781377. The reversal of 38781373 is 37318783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35676729 + 3104644 = 5973^2 + 1762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38781373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38781377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390686 + 19390687.

It is an arithmetic number, because the mean of its divisors is an integer number (19390687).

Almost surely, 2^38781373 is an apocalyptic number.

It is an amenable number.

38781373 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781373 is an equidigital number, since it uses as much as digits as its factorization.

38781373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 38781373 is about 6227.4692291492. The cubic root of 38781373 is about 338.4862724044.

The spelling of 38781373 in words is "thirty-eight million, seven hundred eighty-one thousand, three hundred seventy-three".