1890788036 has 12 divisors (see below), whose sum is σ = 3309217212. Its totient is φ = 945297408.

The previous prime is 1890787993. The next prime is 1890788041. The reversal of 1890788036 is 6308870981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 660181636 + 1230606400 = 25694^2 + 35080^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37196 + ... + 71868.

It is an arithmetic number, because the mean of its divisors is an integer number (275768101).

Almost surely, 2^1890788036 is an apocalyptic number.

It is an amenable number.

1890788036 is a deficient number, since it is larger than the sum of its proper divisors (1418429176).

1890788036 is a wasteful number, since it uses less digits than its factorization.

1890788036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48310 (or 48308 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 1890788036 is about 43483.1925690835. The cubic root of 1890788036 is about 1236.5574031652.

The spelling of 1890788036 in words is "one billion, eight hundred ninety million, seven hundred eighty-eight thousand, thirty-six".