18007035842 has 4 divisors (see below), whose sum is σ = 27010553766. Its totient is φ = 9003517920.

The previous prime is 18007035841. The next prime is 18007035847. The reversal of 18007035842 is 24853070081.

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

It can be written as a sum of positive squares in only one way, i.e., 11056312201 + 6950723641 = 105149^2 + 83371^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18007035796 and 18007035805.

It is not an unprimeable number, because it can be changed into a prime (18007035841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4501758959 + ... + 4501758962.

Almost surely, 2^18007035842 is an apocalyptic number.

18007035842 is a deficient number, since it is larger than the sum of its proper divisors (9003517924).

18007035842 is an equidigital number, since it uses as much as digits as its factorization.

18007035842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9003517923.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 18007035842 in words is "eighteen billion, seven million, thirty-five thousand, eight hundred forty-two".