18816750026 has 4 divisors (see below), whose sum is σ = 28225125042. Its totient is φ = 9408375012.

The previous prime is 18816750019. The next prime is 18816750049. The reversal of 18816750026 is 62005761881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62005761881 = 7 ⋅8857965983.

It can be written as a sum of positive squares in only one way, i.e., 18756672025 + 60078001 = 136955^2 + 7751^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4704187505 + ... + 4704187508.

Almost surely, 2^18816750026 is an apocalyptic number.

18816750026 is a deficient number, since it is larger than the sum of its proper divisors (9408375016).

18816750026 is an equidigital number, since it uses as much as digits as its factorization.

18816750026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9408375015.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 18816750026 in words is "eighteen billion, eight hundred sixteen million, seven hundred fifty thousand, twenty-six".