18540313042 has 8 divisors (see below), whose sum is σ = 27811794636. Its totient is φ = 9269714832.

The previous prime is 18540313027. The next prime is 18540313079. The reversal of 18540313042 is 24031304581.

It can be written as a sum of positive squares in 2 ways, for example, as 18458211321 + 82101721 = 135861^2 + 9061^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18540312995 and 18540313013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165613 + ... + 253984.

Almost surely, 2^18540313042 is an apocalyptic number.

18540313042 is a deficient number, since it is larger than the sum of its proper divisors (9271481594).

18540313042 is a wasteful number, since it uses less digits than its factorization.

18540313042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441692.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 18540313042 in words is "eighteen billion, five hundred forty million, three hundred thirteen thousand, forty-two".