1990895212 has 6 divisors (see below), whose sum is σ = 3484066628. Its totient is φ = 995447604.

The previous prime is 1990895161. The next prime is 1990895239. The reversal of 1990895212 is 2125980991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248861898 + ... + 248861905.

Almost surely, 2^1990895212 is an apocalyptic number.

It is an amenable number.

1990895212 is a deficient number, since it is larger than the sum of its proper divisors (1493171416).

1990895212 is a wasteful number, since it uses less digits than its factorization.

1990895212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497723807 (or 497723805 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 1990895212 is about 44619.4488087874. The cubic root of 1990895212 is about 1258.0062556401.

The spelling of 1990895212 in words is "one billion, nine hundred ninety million, eight hundred ninety-five thousand, two hundred twelve".