18701149248 has 84 divisors (see below), whose sum is σ = 54078022908. Its totient is φ = 6178529280.

The previous prime is 18701149211. The next prime is 18701149261. The reversal of 18701149248 is 84294110781.

It can be written as a sum of positive squares in 2 ways, for example, as 10418693184 + 8282456064 = 102072^2 + 91008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78573 + ... + 208748.

It is an arithmetic number, because the mean of its divisors is an integer number (643785987).

Almost surely, 2^18701149248 is an apocalyptic number.

18701149248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18701149248 is an abundant number, since it is smaller than the sum of its proper divisors (35376873660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18701149248 is a wasteful number, since it uses less digits than its factorization.

18701149248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287452 (or 287439 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 18701149248 in words is "eighteen billion, seven hundred one million, one hundred forty-nine thousand, two hundred forty-eight".