18987098748 has 48 divisors (see below), whose sum is σ = 45360120960. Its totient is φ = 6178221504.

The previous prime is 18987098743. The next prime is 18987098761. The reversal of 18987098748 is 84789078981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18987098743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953518 + ... + 973226.

It is an arithmetic number, because the mean of its divisors is an integer number (945002520).

Almost surely, 2^18987098748 is an apocalyptic number.

It is an amenable number.

18987098748 is an abundant number, since it is smaller than the sum of its proper divisors (26373022212).

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

18987098748 is a wasteful number, since it uses less digits than its factorization.

18987098748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21626 (or 21624 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 69.

The spelling of 18987098748 in words is "eighteen billion, nine hundred eighty-seven million, ninety-eight thousand, seven hundred forty-eight".