1805680492 has 24 divisors (see below), whose sum is σ = 3939667200. Its totient is φ = 703511760.

The previous prime is 1805680469. The next prime is 1805680493. The reversal of 1805680492 is 2940865081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1805680493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930992 + ... + 2931607.

It is an arithmetic number, because the mean of its divisors is an integer number (164152800).

Almost surely, 2^1805680492 is an apocalyptic number.

It is an amenable number.

1805680492 is an abundant number, since it is smaller than the sum of its proper divisors (2133986708).

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

1805680492 is a wasteful number, since it uses less digits than its factorization.

1805680492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862621 (or 5862619 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1805680492 is about 42493.2993776666. The cubic root of 1805680492 is about 1217.7186812940.

The spelling of 1805680492 in words is "one billion, eight hundred five million, six hundred eighty thousand, four hundred ninety-two".