38681233 has 2 divisors, whose sum is σ = 38681234. Its totient is φ = 38681232.

The previous prime is 38681231. The next prime is 38681257. The reversal of 38681233 is 33218683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37736449 + 944784 = 6143^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 38681233 - 2¹ = 38681231 is a prime.

Together with 38681231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38681231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340616 + 19340617.

It is an arithmetic number, because the mean of its divisors is an integer number (19340617).

Almost surely, 2^38681233 is an apocalyptic number.

It is an amenable number.

38681233 is a deficient number, since it is larger than the sum of its proper divisors (1).

38681233 is an equidigital number, since it uses as much as digits as its factorization.

38681233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 38681233 is about 6219.4238479139. The cubic root of 38681233 is about 338.1946785310.

The spelling of 38681233 in words is "thirty-eight million, six hundred eighty-one thousand, two hundred thirty-three".