18402605848 has 24 divisors (see below), whose sum is σ = 37644296940. Its totient is φ = 8364242400.

The previous prime is 18402605839. The next prime is 18402605849. The reversal of 18402605848 is 84850620481.

It is a junction number, because it is equal to n+sod(n) for n = 18402605798 and 18402605807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18402605849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1265338 + ... + 1279798.

Almost surely, 2^18402605848 is an apocalyptic number.

It is an amenable number.

18402605848 is an abundant number, since it is smaller than the sum of its proper divisors (19241691092).

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

18402605848 is an frugal number, since it uses more digits than its factorization.

18402605848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28939 (or 14474 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 18402605848 in words is "eighteen billion, four hundred two million, six hundred five thousand, eight hundred forty-eight".