18229558741 has 4 divisors (see below), whose sum is σ = 18230264800. Its totient is φ = 18228852684.

The previous prime is 18229558733. The next prime is 18229558751. The reversal of 18229558741 is 14785592281.

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 18229558741 - 2³ = 18229558733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229558751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312771 + ... + 366448.

It is an arithmetic number, because the mean of its divisors is an integer number (4557566200).

Almost surely, 2^18229558741 is an apocalyptic number.

It is an amenable number.

18229558741 is a deficient number, since it is larger than the sum of its proper divisors (706059).

18229558741 is an equidigital number, since it uses as much as digits as its factorization.

18229558741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706058.

The product of its digits is 1612800, while the sum is 52.

The spelling of 18229558741 in words is "eighteen billion, two hundred twenty-nine million, five hundred fifty-eight thousand, seven hundred forty-one".