38121697 has 2 divisors, whose sum is σ = 38121698. Its totient is φ = 38121696.

The previous prime is 38121691. The next prime is 38121737. The reversal of 38121697 is 79612183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35808256 + 2313441 = 5984^2 + 1521^2 .

It is a cyclic number.

It is not a de Polignac number, because 38121697 - 2¹¹ = 38119649 is a prime.

It is not a weakly prime, because it can be changed into another prime (38121691) 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, 19060848 + 19060849.

It is an arithmetic number, because the mean of its divisors is an integer number (19060849).

Almost surely, 2^38121697 is an apocalyptic number.

It is an amenable number.

38121697 is a deficient number, since it is larger than the sum of its proper divisors (1).

38121697 is an equidigital number, since it uses as much as digits as its factorization.

38121697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 38121697 is about 6174.2770426990. The cubic root of 38121697 is about 336.5560550044.

The spelling of 38121697 in words is "thirty-eight million, one hundred twenty-one thousand, six hundred ninety-seven".