1819940484 has 24 divisors (see below), whose sum is σ = 4284110880. Its totient is φ = 601277824.

The previous prime is 1819940461. The next prime is 1819940503. The reversal of 1819940484 is 4840499181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669714 + ... + 672425.

It is an arithmetic number, because the mean of its divisors is an integer number (178504620).

Almost surely, 2^1819940484 is an apocalyptic number.

It is an amenable number.

1819940484 is an abundant number, since it is smaller than the sum of its proper divisors (2464170396).

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

1819940484 is a wasteful number, since it uses less digits than its factorization.

1819940484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342259 (or 1342257 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1819940484 is about 42660.7604714215. The cubic root of 1819940484 is about 1220.9158410268.

The spelling of 1819940484 in words is "one billion, eight hundred nineteen million, nine hundred forty thousand, four hundred eighty-four".