38619961 has 2 divisors, whose sum is σ = 38619962. Its totient is φ = 38619960.

The previous prime is 38619943. The next prime is 38620003. The reversal of 38619961 is 16991683.

38619961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 16152361 = 4740^2 + 4019^2 .

It is a cyclic number.

It is not a de Polignac number, because 38619961 - 2⁵ = 38619929 is a prime.

It is not a weakly prime, because it can be changed into another prime (38619901) 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, 19309980 + 19309981.

It is an arithmetic number, because the mean of its divisors is an integer number (19309981).

Almost surely, 2^38619961 is an apocalyptic number.

It is an amenable number.

38619961 is a deficient number, since it is larger than the sum of its proper divisors (1).

38619961 is an equidigital number, since it uses as much as digits as its factorization.

38619961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 38619961 is about 6214.4960374917. The cubic root of 38619961 is about 338.0160146702.

The spelling of 38619961 in words is "thirty-eight million, six hundred nineteen thousand, nine hundred sixty-one".