18763397480 has 32 divisors (see below), whose sum is σ = 42909742440. Its totient is φ = 7382319360.

The previous prime is 18763397479. The next prime is 18763397491. The reversal of 18763397480 is 8479336781.

It can be written as a sum of positive squares in 4 ways, for example, as 9473907556 + 9289489924 = 97334^2 + 96382^2 .

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 7 ways as a sum of consecutive naturals, for example, 3842519 + ... + 3847398.

Almost surely, 2^18763397480 is an apocalyptic number.

18763397480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18763397480 is an abundant number, since it is smaller than the sum of its proper divisors (24146344960).

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

18763397480 is a wasteful number, since it uses less digits than its factorization.

18763397480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689989 (or 7689985 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 18763397480 in words is "eighteen billion, seven hundred sixty-three million, three hundred ninety-seven thousand, four hundred eighty".