1891896268 has 12 divisors (see below), whose sum is σ = 3373287120. Its totient is φ = 928099952.

The previous prime is 1891896239. The next prime is 1891896269. The reversal of 1891896268 is 8626981981.

It is not an unprimeable number, because it can be changed into a prime (1891896269) by changing a digit.

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, 4461808 + ... + 4462231.

It is an arithmetic number, because the mean of its divisors is an integer number (281107260).

Almost surely, 2^1891896268 is an apocalyptic number.

It is an amenable number.

1891896268 is a deficient number, since it is larger than the sum of its proper divisors (1481390852).

1891896268 is a wasteful number, since it uses less digits than its factorization.

1891896268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924096 (or 8924094 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 58.

The square root of 1891896268 is about 43495.9339249084. The cubic root of 1891896268 is about 1236.7989470446.

The spelling of 1891896268 in words is "one billion, eight hundred ninety-one million, eight hundred ninety-six thousand, two hundred sixty-eight".