18125847748 has 12 divisors (see below), whose sum is σ = 31723555500. Its totient is φ = 9061974752.

The previous prime is 18125847709. The next prime is 18125847799. The reversal of 18125847748 is 84774852181.

It can be written as a sum of positive squares in 2 ways, for example, as 8215247044 + 9910600704 = 90638^2 + 99552^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193411 + ... + 271402.

It is an arithmetic number, because the mean of its divisors is an integer number (2643629625).

Almost surely, 2^18125847748 is an apocalyptic number.

It is an amenable number.

18125847748 is a deficient number, since it is larger than the sum of its proper divisors (13597707752).

18125847748 is a wasteful number, since it uses less digits than its factorization.

18125847748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474566 (or 474564 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 55.

The spelling of 18125847748 in words is "eighteen billion, one hundred twenty-five million, eight hundred forty-seven thousand, seven hundred forty-eight".