18284253480 has 48 divisors (see below), whose sum is σ = 59423824980. Its totient is φ = 4875800832.

The previous prime is 18284253469. The next prime is 18284253553. The reversal of 18284253480 is 8435248281.

18284253480 is a `hidden beast` number, since 1 + 8 + 284 + 25 + 348 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17081967204 + 1202286276 = 130698^2 + 34674^2 .

It is a super-2 number, since 2×18284253480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25394437 + ... + 25395156.

Almost surely, 2^18284253480 is an apocalyptic number.

18284253480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18284253480 is an abundant number, since it is smaller than the sum of its proper divisors (41139571500).

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

18284253480 is a wasteful number, since it uses less digits than its factorization.

18284253480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50789610 (or 50789603 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 18284253480 in words is "eighteen billion, two hundred eighty-four million, two hundred fifty-three thousand, four hundred eighty".