94496481581 has 2 divisors, whose sum is σ = 94496481582. Its totient is φ = 94496481580.

The previous prime is 94496481533. The next prime is 94496481619. The reversal of 94496481581 is 18518469449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85302548356 + 9193933225 = 292066^2 + 95885^2 .

It is an emirp because it is prime and its reverse (18518469449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94496481581 - 2⁶ = 94496481517 is a prime.

It is a super-2 number, since 2×94496481581² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 94496481581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94496481511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47248240790 + 47248240791.

It is an arithmetic number, because the mean of its divisors is an integer number (47248240791).

Almost surely, 2^94496481581 is an apocalyptic number.

It is an amenable number.

94496481581 is a deficient number, since it is larger than the sum of its proper divisors (1).

94496481581 is an equidigital number, since it uses as much as digits as its factorization.

94496481581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 59.

The spelling of 94496481581 in words is "ninety-four billion, four hundred ninety-six million, four hundred eighty-one thousand, five hundred eighty-one".