38457649 has 2 divisors, whose sum is σ = 38457650. Its totient is φ = 38457648.

The previous prime is 38457611. The next prime is 38457667. The reversal of 38457649 is 94675483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32982049 + 5475600 = 5743^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 38457649 - 2²³ = 30069041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38457599 and 38457608.

It is not a weakly prime, because it can be changed into another prime (38454649) 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, 19228824 + 19228825.

It is an arithmetic number, because the mean of its divisors is an integer number (19228825).

Almost surely, 2^38457649 is an apocalyptic number.

It is an amenable number.

38457649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38457649 is an equidigital number, since it uses as much as digits as its factorization.

38457649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 38457649 is about 6201.4231431180. The cubic root of 38457649 is about 337.5418117380.

The spelling of 38457649 in words is "thirty-eight million, four hundred fifty-seven thousand, six hundred forty-nine".