38735881 has 2 divisors, whose sum is σ = 38735882. Its totient is φ = 38735880.

The previous prime is 38735869. The next prime is 38735891. The reversal of 38735881 is 18853783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 18844281 = 4460^2 + 4341^2 .

It is a cyclic number.

It is not a de Polignac number, because 38735881 - 2⁹ = 38735369 is a prime.

It is a super-2 number, since 2×38735881² = 3000936953692322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38735891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19367940 + 19367941.

It is an arithmetic number, because the mean of its divisors is an integer number (19367941).

Almost surely, 2^38735881 is an apocalyptic number.

It is an amenable number.

38735881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38735881 is an equidigital number, since it uses as much as digits as its factorization.

38735881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 38735881 is about 6223.8156303027. The cubic root of 38735881 is about 338.3538682697.

The spelling of 38735881 in words is "thirty-eight million, seven hundred thirty-five thousand, eight hundred eighty-one".