995478891 has 16 divisors (see below), whose sum is σ = 1451599488. Its totient is φ = 601808000.

The previous prime is 995478889. The next prime is 995478901. The reversal of 995478891 is 198874599.

It is a cyclic number.

It is not a de Polignac number, because 995478891 - 2¹ = 995478889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (995478091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24381 + ... + 50846.

It is an arithmetic number, because the mean of its divisors is an integer number (90724968).

Almost surely, 2^995478891 is an apocalyptic number.

995478891 is a deficient number, since it is larger than the sum of its proper divisors (456120597).

995478891 is a wasteful number, since it uses less digits than its factorization.

995478891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75642.

The product of its digits is 6531840, while the sum is 60.

The square root of 995478891 is about 31551.2106106881. The cubic root of 995478891 is about 998.4906867864.

The spelling of 995478891 in words is "nine hundred ninety-five million, four hundred seventy-eight thousand, eight hundred ninety-one".