18619030329 has 4 divisors (see below), whose sum is σ = 24825373776. Its totient is φ = 12412686884.

The previous prime is 18619030319. The next prime is 18619030349. The reversal of 18619030329 is 92303091681.

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 18619030329 - 2¹³ = 18619022137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18619030319) 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, 3103171719 + ... + 3103171724.

It is an arithmetic number, because the mean of its divisors is an integer number (6206343444).

Almost surely, 2^18619030329 is an apocalyptic number.

It is an amenable number.

18619030329 is a deficient number, since it is larger than the sum of its proper divisors (6206343447).

18619030329 is an equidigital number, since it uses as much as digits as its factorization.

18619030329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206343446.

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 18619030329 in words is "eighteen billion, six hundred nineteen million, thirty thousand, three hundred twenty-nine".