981115 has 8 divisors (see below), whose sum is σ = 1182960. Its totient is φ = 781152.

The previous prime is 981091. The next prime is 981133. The reversal of 981115 is 511189.

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 981115 - 2¹⁷ = 850043 is a prime.

981115 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 981115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 1894.

It is an arithmetic number, because the mean of its divisors is an integer number (147870).

2⁹⁸¹¹¹⁵ is an apocalyptic number.

981115 is a deficient number, since it is larger than the sum of its proper divisors (201845).

981115 is a wasteful number, since it uses less digits than its factorization.

981115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its digits is 360, while the sum is 25.

The square root of 981115 is about 990.5124936113. The cubic root of 981115 is about 99.3664951914.

The spelling of 981115 in words is "nine hundred eighty-one thousand, one hundred fifteen".