18453029487 has 4 divisors (see below), whose sum is σ = 24604039320. Its totient is φ = 12302019656.

The previous prime is 18453029479. The next prime is 18453029489. The reversal of 18453029487 is 78492035481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78492035481 = 3 ⋅26164011827.

It is a cyclic number.

It is not a de Polignac number, because 18453029487 - 2³ = 18453029479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18453029489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075504912 + ... + 3075504917.

It is an arithmetic number, because the mean of its divisors is an integer number (6151009830).

Almost surely, 2^18453029487 is an apocalyptic number.

18453029487 is a deficient number, since it is larger than the sum of its proper divisors (6151009833).

18453029487 is an equidigital number, since it uses as much as digits as its factorization.

18453029487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151009832.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 18453029487 in words is "eighteen billion, four hundred fifty-three million, twenty-nine thousand, four hundred eighty-seven".