1898394966 has 24 divisors (see below), whose sum is σ = 4429588800. Its totient is φ = 584121456.

The previous prime is 1898394931. The next prime is 1898394973. The reversal of 1898394966 is 6694938981.

It is a happy number.

1898394966 is a `hidden beast` number, since 189 + 8 + 394 + 9 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4056166 + ... + 4056633.

It is an arithmetic number, because the mean of its divisors is an integer number (184566200).

Almost surely, 2^1898394966 is an apocalyptic number.

1898394966 is an abundant number, since it is smaller than the sum of its proper divisors (2531193834).

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

1898394966 is a wasteful number, since it uses less digits than its factorization.

1898394966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112820 (or 8112817 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 1898394966 is about 43570.5745429183. The cubic root of 1898394966 is about 1238.2134709134.

The spelling of 1898394966 in words is "one billion, eight hundred ninety-eight million, three hundred ninety-four thousand, nine hundred sixty-six".