38871013 has 2 divisors, whose sum is σ = 38871014. Its totient is φ = 38871012.

The previous prime is 38870987. The next prime is 38871023. The reversal of 38871013 is 31017883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30008484 + 8862529 = 5478^2 + 2977^2 .

It is a cyclic number.

It is not a de Polignac number, because 38871013 - 2²¹ = 36773861 is a prime.

It is equal to p_2369029 and since 38871013 and 2369029 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38871023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19435506 + 19435507.

It is an arithmetic number, because the mean of its divisors is an integer number (19435507).

Almost surely, 2^38871013 is an apocalyptic number.

It is an amenable number.

38871013 is a deficient number, since it is larger than the sum of its proper divisors (1).

38871013 is an equidigital number, since it uses as much as digits as its factorization.

38871013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 38871013 is about 6234.6622202009. The cubic root of 38871013 is about 338.7468662537.

Adding to 38871013 its reverse (31017883), we get a palindrome (69888896).

It can be divided in two parts, 3887 and 1013, that added together give a square (4900 = 70²).

The spelling of 38871013 in words is "thirty-eight million, eight hundred seventy-one thousand, thirteen".