37648397 has 2 divisors, whose sum is σ = 37648398. Its totient is φ = 37648396.

The previous prime is 37648393. The next prime is 37648399. The reversal of 37648397 is 79384673.

It is a happy number.

37648397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23367556 + 14280841 = 4834^2 + 3779^2 .

It is an emirp because it is prime and its reverse (79384673) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37648397 - 2² = 37648393 is a prime.

Together with 37648399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37648393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18824198 + 18824199.

It is an arithmetic number, because the mean of its divisors is an integer number (18824199).

Almost surely, 2^37648397 is an apocalyptic number.

It is an amenable number.

37648397 is a deficient number, since it is larger than the sum of its proper divisors (1).

37648397 is an equidigital number, since it uses as much as digits as its factorization.

37648397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 37648397 is about 6135.8289578508. The cubic root of 37648397 is about 335.1574132124.

The spelling of 37648397 in words is "thirty-seven million, six hundred forty-eight thousand, three hundred ninety-seven".