93989749159181 has 2 divisors, whose sum is σ = 93989749159182. Its totient is φ = 93989749159180.

The previous prime is 93989749159043. The next prime is 93989749159217. The reversal of 93989749159181 is 18195194798939.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84926066905156 + 9063682254025 = 9215534^2 + 3010595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93989749159181 is a prime.

It is a super-2 number, since 2×93989749159181² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 93989749159181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93989749150181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46994874579590 + 46994874579591.

It is an arithmetic number, because the mean of its divisors is an integer number (46994874579591).

Almost surely, 2^{93989749159181} is an apocalyptic number.

It is an amenable number.

93989749159181 is a deficient number, since it is larger than the sum of its proper divisors (1).

93989749159181 is an equidigital number, since it uses as much as digits as its factorization.

93989749159181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587237120, while the sum is 83.

The spelling of 93989749159181 in words is "ninety-three trillion, nine hundred eighty-nine billion, seven hundred forty-nine million, one hundred fifty-nine thousand, one hundred eighty-one".