18483081261 has 4 divisors (see below), whose sum is σ = 24644108352. Its totient is φ = 12322054172.

The previous prime is 18483081247. The next prime is 18483081289. The reversal of 18483081261 is 16218038481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18483081261 - 2⁵ = 18483081229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18483081061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080513541 + ... + 3080513546.

It is an arithmetic number, because the mean of its divisors is an integer number (6161027088).

Almost surely, 2^18483081261 is an apocalyptic number.

It is an amenable number.

18483081261 is a deficient number, since it is larger than the sum of its proper divisors (6161027091).

18483081261 is an equidigital number, since it uses as much as digits as its factorization.

18483081261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161027090.

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 18483081261 in words is "eighteen billion, four hundred eighty-three million, eighty-one thousand, two hundred sixty-one".