18580463442 has 12 divisors (see below), whose sum is σ = 40257670830. Its totient is φ = 6193487808.

The previous prime is 18580463441. The next prime is 18580463449. The reversal of 18580463442 is 24436408581.

18580463442 is a `hidden beast` number, since 1 + 8 + 5 + 8 + 0 + 4 + 634 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10223029881 + 8357433561 = 101109^2 + 91419^2 .

It is not an unprimeable number, because it can be changed into a prime (18580463441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 516123967 + ... + 516124002.

Almost surely, 2^18580463442 is an apocalyptic number.

18580463442 is an abundant number, since it is smaller than the sum of its proper divisors (21677207388).

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

18580463442 is a wasteful number, since it uses less digits than its factorization.

18580463442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032247977 (or 1032247974 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 18580463442 in words is "eighteen billion, five hundred eighty million, four hundred sixty-three thousand, four hundred forty-two".