18467042646 has 32 divisors (see below), whose sum is σ = 41146731360. Its totient is φ = 5486229504.

The previous prime is 18467042639. The next prime is 18467042683. The reversal of 18467042646 is 64624076481.

It is a junction number, because it is equal to n+sod(n) for n = 18467042595 and 18467042604.

It is a congruent number.

It is an unprimeable number.

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, 4079755 + ... + 4084278.

It is an arithmetic number, because the mean of its divisors is an integer number (1285835355).

Almost surely, 2^18467042646 is an apocalyptic number.

18467042646 is an abundant number, since it is smaller than the sum of its proper divisors (22679688714).

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

18467042646 is a wasteful number, since it uses less digits than its factorization.

18467042646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8164080.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 18467042646 in words is "eighteen billion, four hundred sixty-seven million, forty-two thousand, six hundred forty-six".