18084557426 has 8 divisors (see below), whose sum is σ = 29213515884. Its totient is φ = 8346718800.

The previous prime is 18084557423. The next prime is 18084557437. The reversal of 18084557426 is 62475548081.

It can be written as a sum of positive squares in 2 ways, for example, as 17902172401 + 182385025 = 133799^2 + 13505^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18084557423) 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, 347779925 + ... + 347779976.

Almost surely, 2^18084557426 is an apocalyptic number.

18084557426 is a deficient number, since it is larger than the sum of its proper divisors (11128958458).

18084557426 is a wasteful number, since it uses less digits than its factorization.

18084557426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695559916.

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 18084557426 in words is "eighteen billion, eighty-four million, five hundred fifty-seven thousand, four hundred twenty-six".