38001989 has 2 divisors, whose sum is σ = 38001990. Its totient is φ = 38001988.

The previous prime is 38001979. The next prime is 38002009. The reversal of 38001989 is 98910083.

38001989 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., 36602500 + 1399489 = 6050^2 + 1183^2 .

It is an emirp because it is prime and its reverse (98910083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38001989 - 2⁴ = 38001973 is a prime.

It is a super-2 number, since 2×38001989² = 2888302335912242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38001949) 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, 19000994 + 19000995.

It is an arithmetic number, because the mean of its divisors is an integer number (19000995).

Almost surely, 2^38001989 is an apocalyptic number.

It is an amenable number.

38001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

38001989 is an equidigital number, since it uses as much as digits as its factorization.

38001989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 38001989 is about 6164.5753300613. The cubic root of 38001989 is about 336.2034063399.

The spelling of 38001989 in words is "thirty-eight million, one thousand, nine hundred eighty-nine".