18248358242 has 4 divisors (see below), whose sum is σ = 27372537366. Its totient is φ = 9124179120.

The previous prime is 18248358239. The next prime is 18248358251. The reversal of 18248358242 is 24285384281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24285384281 = 73 ⋅332676497.

It can be written as a sum of positive squares in only one way, i.e., 16058211841 + 2190146401 = 126721^2 + 46799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4562089559 + ... + 4562089562.

Almost surely, 2^18248358242 is an apocalyptic number.

18248358242 is a deficient number, since it is larger than the sum of its proper divisors (9124179124).

18248358242 is an equidigital number, since it uses as much as digits as its factorization.

18248358242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9124179123.

The product of its digits is 983040, while the sum is 47.

The spelling of 18248358242 in words is "eighteen billion, two hundred forty-eight million, three hundred fifty-eight thousand, two hundred forty-two".