1819440260 has 48 divisors (see below), whose sum is σ = 4209492672. Its totient is φ = 655056000.

The previous prime is 1819440241. The next prime is 1819440263. The reversal of 1819440260 is 620449181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1819440260.

It is not an unprimeable number, because it can be changed into a prime (1819440263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18722 + ... + 63161.

It is an arithmetic number, because the mean of its divisors is an integer number (87697764).

Almost surely, 2^1819440260 is an apocalyptic number.

1819440260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1819440260 is an abundant number, since it is smaller than the sum of its proper divisors (2390052412).

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

1819440260 is a wasteful number, since it uses less digits than its factorization.

1819440260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82004 (or 82002 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1819440260 is about 42654.8972569387. The cubic root of 1819440260 is about 1220.8039715500.

The spelling of 1819440260 in words is "one billion, eight hundred nineteen million, four hundred forty thousand, two hundred sixty".