38961863 has 2 divisors, whose sum is σ = 38961864. Its totient is φ = 38961862.

The previous prime is 38961847. The next prime is 38961869. The reversal of 38961863 is 36816983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38961863 - 2⁴ = 38961847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38961869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19480931 + 19480932.

It is an arithmetic number, because the mean of its divisors is an integer number (19480932).

Almost surely, 2^38961863 is an apocalyptic number.

38961863 is a deficient number, since it is larger than the sum of its proper divisors (1).

38961863 is an equidigital number, since it uses as much as digits as its factorization.

38961863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 38961863 is about 6241.9438478730. The cubic root of 38961863 is about 339.0105692502.

The spelling of 38961863 in words is "thirty-eight million, nine hundred sixty-one thousand, eight hundred sixty-three".