955184761981 has 2 divisors, whose sum is σ = 955184761982. Its totient is φ = 955184761980.

The previous prime is 955184761967. The next prime is 955184762017. The reversal of 955184761981 is 189167481559.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927627101956 + 27557660025 = 963134^2 + 166005^2 .

It is a cyclic number.

It is not a de Polignac number, because 955184761981 - 2²³ = 955176373373 is a prime.

It is a super-2 number, since 2×955184761981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (955184761931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477592380990 + 477592380991.

It is an arithmetic number, because the mean of its divisors is an integer number (477592380991).

Almost surely, 2^955184761981 is an apocalyptic number.

It is an amenable number.

955184761981 is a deficient number, since it is larger than the sum of its proper divisors (1).

955184761981 is an equidigital number, since it uses as much as digits as its factorization.

955184761981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 64.

The spelling of 955184761981 in words is "nine hundred fifty-five billion, one hundred eighty-four million, seven hundred sixty-one thousand, nine hundred eighty-one".