18313514619 has 4 divisors (see below), whose sum is σ = 24418019496. Its totient is φ = 12209009744.

The previous prime is 18313514581. The next prime is 18313514651. The reversal of 18313514619 is 91641531381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18313514619 is a prime.

It is a super-2 number, since 2×18313514619² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18313514699) 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, 3052252434 + ... + 3052252439.

It is an arithmetic number, because the mean of its divisors is an integer number (6104504874).

Almost surely, 2^18313514619 is an apocalyptic number.

18313514619 is a deficient number, since it is larger than the sum of its proper divisors (6104504877).

18313514619 is an equidigital number, since it uses as much as digits as its factorization.

18313514619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104504876.

The product of its digits is 77760, while the sum is 42.

The spelling of 18313514619 in words is "eighteen billion, three hundred thirteen million, five hundred fourteen thousand, six hundred nineteen".