18709333480 has 16 divisors (see below), whose sum is σ = 42096000420. Its totient is φ = 7483733376.

The previous prime is 18709333471. The next prime is 18709333507. The reversal of 18709333480 is 8433390781.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18709315524 + 17956 = 136782^2 + 134^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18709333480.

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 3 ways as a sum of consecutive naturals, for example, 233866629 + ... + 233866708.

Almost surely, 2^18709333480 is an apocalyptic number.

18709333480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18709333480 is an abundant number, since it is smaller than the sum of its proper divisors (23386666940).

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

18709333480 is a wasteful number, since it uses less digits than its factorization.

18709333480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467733348 (or 467733344 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 18709333480 in words is "eighteen billion, seven hundred nine million, three hundred thirty-three thousand, four hundred eighty".