981895863 has 16 divisors (see below), whose sum is σ = 1418560640. Its totient is φ = 600532704.

The previous prime is 981895823. The next prime is 981895867. The reversal of 981895863 is 368598189.

It is not a de Polignac number, because 981895863 - 2⁹ = 981895351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981895867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70873 + ... + 83586.

It is an arithmetic number, because the mean of its divisors is an integer number (88660040).

Almost surely, 2^981895863 is an apocalyptic number.

981895863 is a deficient number, since it is larger than the sum of its proper divisors (436664777).

981895863 is a wasteful number, since it uses less digits than its factorization.

981895863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154638.

The product of its digits is 3732480, while the sum is 57.

The square root of 981895863 is about 31335.2176153286. The cubic root of 981895863 is about 993.9284991489.

The spelling of 981895863 in words is "nine hundred eighty-one million, eight hundred ninety-five thousand, eight hundred sixty-three".