18745258485 has 16 divisors (see below), whose sum is σ = 30009564864. Its totient is φ = 9991754112.

The previous prime is 18745258481. The next prime is 18745258501. The reversal of 18745258485 is 58485254781.

It is not a de Polignac number, because 18745258485 - 2² = 18745258481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18745258481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330147 + ... + 382736.

It is an arithmetic number, because the mean of its divisors is an integer number (1875597804).

Almost surely, 2^18745258485 is an apocalyptic number.

18745258485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18745258485 is a deficient number, since it is larger than the sum of its proper divisors (11264306379).

18745258485 is a wasteful number, since it uses less digits than its factorization.

18745258485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714644.

The product of its digits is 14336000, while the sum is 57.

The spelling of 18745258485 in words is "eighteen billion, seven hundred forty-five million, two hundred fifty-eight thousand, four hundred eighty-five".