38507849 has 2 divisors, whose sum is σ = 38507850. Its totient is φ = 38507848.

The previous prime is 38507837. The next prime is 38507867. The reversal of 38507849 is 94870583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22024249 + 16483600 = 4693^2 + 4060^2 .

It is a cyclic number.

It is not a de Polignac number, because 38507849 - 2⁸ = 38507593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38501849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19253924 + 19253925.

It is an arithmetic number, because the mean of its divisors is an integer number (19253925).

Almost surely, 2^38507849 is an apocalyptic number.

It is an amenable number.

38507849 is a deficient number, since it is larger than the sum of its proper divisors (1).

38507849 is an equidigital number, since it uses as much as digits as its factorization.

38507849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 38507849 is about 6205.4692812067. The cubic root of 38507849 is about 337.6886159235.

The spelling of 38507849 in words is "thirty-eight million, five hundred seven thousand, eight hundred forty-nine".