938825191217 has 2 divisors, whose sum is σ = 938825191218. Its totient is φ = 938825191216.

The previous prime is 938825191193. The next prime is 938825191261. The reversal of 938825191217 is 712191528839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858854441536 + 79970749681 = 926744^2 + 282791^2 .

It is a cyclic number.

It is not a de Polignac number, because 938825191217 - 2¹⁸ = 938824929073 is a prime.

It is a super-2 number, since 2×938825191217² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (938825191517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469412595608 + 469412595609.

It is an arithmetic number, because the mean of its divisors is an integer number (469412595609).

Almost surely, 2^938825191217 is an apocalyptic number.

It is an amenable number.

938825191217 is a deficient number, since it is larger than the sum of its proper divisors (1).

938825191217 is an equidigital number, since it uses as much as digits as its factorization.

938825191217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 56.

The spelling of 938825191217 in words is "nine hundred thirty-eight billion, eight hundred twenty-five million, one hundred ninety-one thousand, two hundred seventeen".