1819042468 has 12 divisors (see below), whose sum is σ = 3243387420. Its totient is φ = 892360352.

The previous prime is 1819042453. The next prime is 1819042471. The reversal of 1819042468 is 8642409181.

It can be written as a sum of positive squares in 2 ways, for example, as 1019397184 + 799645284 = 31928^2 + 28278^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4289983 + ... + 4290406.

It is an arithmetic number, because the mean of its divisors is an integer number (270282285).

Almost surely, 2^1819042468 is an apocalyptic number.

It is an amenable number.

1819042468 is a deficient number, since it is larger than the sum of its proper divisors (1424344952).

1819042468 is a wasteful number, since it uses less digits than its factorization.

1819042468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8580446 (or 8580444 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1819042468 is about 42650.2340907995. The cubic root of 1819042468 is about 1220.7149952020.

The spelling of 1819042468 in words is "one billion, eight hundred nineteen million, forty-two thousand, four hundred sixty-eight".