18467439480 has 480 divisors, whose sum is σ = 73072335600. Its totient is φ = 4170507264.

The previous prime is 18467439467. The next prime is 18467439517. The reversal of 18467439480 is 8493476481.

18467439480 is a `hidden beast` number, since 18 + 467 + 4 + 3 + 94 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 14128987 + ... + 14130293.

Almost surely, 2^18467439480 is an apocalyptic number.

18467439480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18467439480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36536167800).

18467439480 is an abundant number, since it is smaller than the sum of its proper divisors (54604896120).

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

18467439480 is a wasteful number, since it uses less digits than its factorization.

18467439480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 18467439480 in words is "eighteen billion, four hundred sixty-seven million, four hundred thirty-nine thousand, four hundred eighty".