891995313 has 8 divisors (see below), whose sum is σ = 1297447776. Its totient is φ = 540603200.

The previous prime is 891995257. The next prime is 891995327. The reversal of 891995313 is 313599198.

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

It is a cyclic number.

It is not a de Polignac number, because 891995313 - 2¹⁶ = 891929777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (891995383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13515048 + ... + 13515113.

It is an arithmetic number, because the mean of its divisors is an integer number (162180972).

Almost surely, 2^891995313 is an apocalyptic number.

It is an amenable number.

891995313 is a deficient number, since it is larger than the sum of its proper divisors (405452463).

891995313 is a wasteful number, since it uses less digits than its factorization.

891995313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27030175.

The product of its digits is 262440, while the sum is 48.

The square root of 891995313 is about 29866.2905798494. The cubic root of 891995313 is about 962.6184710078.

The spelling of 891995313 in words is "eight hundred ninety-one million, nine hundred ninety-five thousand, three hundred thirteen".