18478411490 has 64 divisors (see below), whose sum is σ = 42806181888. Its totient is φ = 5573707200.

The previous prime is 18478411453. The next prime is 18478411493. The reversal of 18478411490 is 9411487481.

It is not an unprimeable number, because it can be changed into a prime (18478411493) 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 31 ways as a sum of consecutive naturals, for example, 363194 + ... + 410933.

It is an arithmetic number, because the mean of its divisors is an integer number (668846592).

Almost surely, 2^18478411490 is an apocalyptic number.

18478411490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18478411490 is an abundant number, since it is smaller than the sum of its proper divisors (24327770398).

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

18478411490 is a wasteful number, since it uses less digits than its factorization.

18478411490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774183.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 18478411490 in words is "eighteen billion, four hundred seventy-eight million, four hundred eleven thousand, four hundred ninety".