18425426619 has 8 divisors (see below), whose sum is σ = 24662828880. Its totient is φ = 12235821056.

The previous prime is 18425426581. The next prime is 18425426633. The reversal of 18425426619 is 91662452481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18425426619 - 2³² = 14130459323 is a prime.

It is a super-2 number, since 2×18425426619² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18425426699) 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 7 ways as a sum of consecutive naturals, for example, 11948274 + ... + 11949815.

It is an arithmetic number, because the mean of its divisors is an integer number (3082853610).

Almost surely, 2^18425426619 is an apocalyptic number.

18425426619 is a deficient number, since it is larger than the sum of its proper divisors (6237402261).

18425426619 is a wasteful number, since it uses less digits than its factorization.

18425426619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23898349.

The product of its digits is 829440, while the sum is 48.

The spelling of 18425426619 in words is "eighteen billion, four hundred twenty-five million, four hundred twenty-six thousand, six hundred nineteen".