891968830 has 8 divisors (see below), whose sum is σ = 1605543912. Its totient is φ = 356787528.

The previous prime is 891968827. The next prime is 891968839. The reversal of 891968830 is 38869198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891968839) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 44598432 + ... + 44598451.

It is an arithmetic number, because the mean of its divisors is an integer number (200692989).

Almost surely, 2^891968830 is an apocalyptic number.

891968830 is a deficient number, since it is larger than the sum of its proper divisors (713575082).

891968830 is a wasteful number, since it uses less digits than its factorization.

891968830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89196890.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 891968830 is about 29865.8472171810. The cubic root of 891968830 is about 962.6089443220.

The spelling of 891968830 in words is "eight hundred ninety-one million, nine hundred sixty-eight thousand, eight hundred thirty".