1820018192 has 30 divisors (see below), whose sum is σ = 3652101258. Its totient is φ = 878622976.

The previous prime is 1820018171. The next prime is 1820018203. The reversal of 1820018192 is 2918100281.

It can be written as a sum of positive squares in 3 ways, for example, as 401441296 + 1418576896 = 20036^2 + 37664^2 .

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, 54173 + ... + 81084.

Almost surely, 2^1820018192 is an apocalyptic number.

It is an amenable number.

1820018192 is an abundant number, since it is smaller than the sum of its proper divisors (1832083066).

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

1820018192 is a wasteful number, since it uses less digits than its factorization.

1820018192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135323 (or 135288 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 1820018192 is about 42661.6712283989. The cubic root of 1820018192 is about 1220.9332177082.

The spelling of 1820018192 in words is "one billion, eight hundred twenty million, eighteen thousand, one hundred ninety-two".