938587949781863 has 2 divisors, whose sum is σ = 938587949781864. Its totient is φ = 938587949781862.

The previous prime is 938587949781793. The next prime is 938587949781901. The reversal of 938587949781863 is 368187949785839.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 938587949781863 - 2⁸ = 938587949781607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938587949741863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469293974890931 + 469293974890932.

It is an arithmetic number, because the mean of its divisors is an integer number (469293974890932).

Almost surely, 2^{938587949781863} is an apocalyptic number.

938587949781863 is a deficient number, since it is larger than the sum of its proper divisors (1).

938587949781863 is an equidigital number, since it uses as much as digits as its factorization.

938587949781863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158018273280, while the sum is 95.

The spelling of 938587949781863 in words is "nine hundred thirty-eight trillion, five hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-one thousand, eight hundred sixty-three".