38281090649 has 2 divisors, whose sum is σ = 38281090650. Its totient is φ = 38281090648.

The previous prime is 38281090607. The next prime is 38281090663. The reversal of 38281090649 is 94609018283.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38271879424 + 9211225 = 195632^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 38281090649 - 2¹² = 38281086553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38281090597 and 38281090606.

It is not a weakly prime, because it can be changed into another prime (38281090349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19140545324 + 19140545325.

It is an arithmetic number, because the mean of its divisors is an integer number (19140545325).

Almost surely, 2^38281090649 is an apocalyptic number.

It is an amenable number.

38281090649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38281090649 is an equidigital number, since it uses as much as digits as its factorization.

38281090649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 38281090649 in words is "thirty-eight billion, two hundred eighty-one million, ninety thousand, six hundred forty-nine".