1890964868 has 48 divisors (see below), whose sum is σ = 3675611520. Its totient is φ = 845779200.

The previous prime is 1890964853. The next prime is 1890964897. The reversal of 1890964868 is 8684690981.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213488 + ... + 222168.

It is an arithmetic number, because the mean of its divisors is an integer number (76575240).

Almost surely, 2^1890964868 is an apocalyptic number.

It is an amenable number.

1890964868 is a deficient number, since it is larger than the sum of its proper divisors (1784646652).

1890964868 is a wasteful number, since it uses less digits than its factorization.

1890964868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828 (or 8826 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 59.

The square root of 1890964868 is about 43485.2258589052. The cubic root of 1890964868 is about 1236.5959507792.

The spelling of 1890964868 in words is "one billion, eight hundred ninety million, nine hundred sixty-four thousand, eight hundred sixty-eight".