90118000481 has 2 divisors, whose sum is σ = 90118000482. Its totient is φ = 90118000480.

The previous prime is 90118000417. The next prime is 90118000499. The reversal of 90118000481 is 18400081109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88496730256 + 1621270225 = 297484^2 + 40265^2 .

It is a cyclic number.

It is not a de Polignac number, because 90118000481 - 2⁶ = 90118000417 is a prime.

It is a super-2 number, since 2×90118000481² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90118000411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45059000240 + 45059000241.

It is an arithmetic number, because the mean of its divisors is an integer number (45059000241).

Almost surely, 2^90118000481 is an apocalyptic number.

It is an amenable number.

90118000481 is a deficient number, since it is larger than the sum of its proper divisors (1).

90118000481 is an equidigital number, since it uses as much as digits as its factorization.

90118000481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 90118000481 in words is "ninety billion, one hundred eighteen million, four hundred eighty-one", and thus it is an aban number.