1890452308 has 12 divisors (see below), whose sum is σ = 3309193440. Its totient is φ = 944968472.

The previous prime is 1890452299. The next prime is 1890452327. The reversal of 1890452308 is 8032540981.

It is a congruent number.

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, 47416 + ... + 77647.

It is an arithmetic number, because the mean of its divisors is an integer number (275766120).

Almost surely, 2^1890452308 is an apocalyptic number.

It is an amenable number.

1890452308 is a deficient number, since it is larger than the sum of its proper divisors (1418741132).

1890452308 is a wasteful number, since it uses less digits than its factorization.

1890452308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128846 (or 128844 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1890452308 is about 43479.3319635893. The cubic root of 1890452308 is about 1236.4842111928.

The spelling of 1890452308 in words is "one billion, eight hundred ninety million, four hundred fifty-two thousand, three hundred eight".