18988828706 has 4 divisors (see below), whose sum is σ = 28483243062. Its totient is φ = 9494414352.

The previous prime is 18988828699. The next prime is 18988828757. The reversal of 18988828706 is 60782888981.

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., 17806500481 + 1182328225 = 133441^2 + 34385^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4747207175 + ... + 4747207178.

Almost surely, 2^18988828706 is an apocalyptic number.

18988828706 is a deficient number, since it is larger than the sum of its proper divisors (9494414356).

18988828706 is an equidigital number, since it uses as much as digits as its factorization.

18988828706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494414355.

The product of its (nonzero) digits is 24772608, while the sum is 65.

The spelling of 18988828706 in words is "eighteen billion, nine hundred eighty-eight million, eight hundred twenty-eight thousand, seven hundred six".