981193 has 4 divisors (see below), whose sum is σ = 994708. Its totient is φ = 967680.

The previous prime is 981187. The next prime is 981199. The reversal of 981193 is 391189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 391189 = 31 ⋅12619.

It is an interprime number because it is at equal distance from previous prime (981187) and next prime (981199).

It can be written as a sum of positive squares in 2 ways, for example, as 328329 + 652864 = 573^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 981193 - 2¹³ = 973001 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (981199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6648 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (248677).

2⁹⁸¹¹⁹³ is an apocalyptic number.

It is an amenable number.

981193 is a deficient number, since it is larger than the sum of its proper divisors (13515).

981193 is a wasteful number, since it uses less digits than its factorization.

981193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13514.

The product of its digits is 1944, while the sum is 31.

The square root of 981193 is about 990.5518663856. The cubic root of 981193 is about 99.3691283795.

The spelling of 981193 in words is "nine hundred eighty-one thousand, one hundred ninety-three".