1818481532 has 18 divisors (see below), whose sum is σ = 3701909232. Its totient is φ = 779349144.

The previous prime is 1818481529. The next prime is 1818481543. The reversal of 1818481532 is 2351848181.

It is a self number, because there is not a number n which added to its sum of digits gives 1818481532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4638788 + ... + 4639179.

It is an arithmetic number, because the mean of its divisors is an integer number (205661624).

Almost surely, 2^1818481532 is an apocalyptic number.

It is an amenable number.

1818481532 is an abundant number, since it is smaller than the sum of its proper divisors (1883427700).

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

1818481532 is a wasteful number, since it uses less digits than its factorization.

1818481532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277985 (or 9277976 counting only the distinct ones).

The product of its digits is 61440, while the sum is 41.

The square root of 1818481532 is about 42643.6575823416. The cubic root of 1818481532 is about 1220.5895054833.

The spelling of 1818481532 in words is "one billion, eight hundred eighteen million, four hundred eighty-one thousand, five hundred thirty-two".