38536649 has 2 divisors, whose sum is σ = 38536650. Its totient is φ = 38536648.

The previous prime is 38536639. The next prime is 38536669. The reversal of 38536649 is 94663583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29506624 + 9030025 = 5432^2 + 3005^2 .

It is a cyclic number.

It is not a de Polignac number, because 38536649 - 2¹² = 38532553 is a prime.

It is a super-2 number, since 2×38536649² = 2970146632298402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38536639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19268324 + 19268325.

It is an arithmetic number, because the mean of its divisors is an integer number (19268325).

Almost surely, 2^38536649 is an apocalyptic number.

It is an amenable number.

38536649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38536649 is an equidigital number, since it uses as much as digits as its factorization.

38536649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 38536649 is about 6207.7893810921. The cubic root of 38536649 is about 337.7727806575.

The spelling of 38536649 in words is "thirty-eight million, five hundred thirty-six thousand, six hundred forty-nine".