981166613 has 8 divisors (see below), whose sum is σ = 1148683200. Its totient is φ = 820487520.

The previous prime is 981166603. The next prime is 981166619. The reversal of 981166613 is 316661189.

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 981166613 - 2⁴ = 981166597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981166619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1709063 + ... + 1709636.

It is an arithmetic number, because the mean of its divisors is an integer number (143585400).

Almost surely, 2^981166613 is an apocalyptic number.

It is an amenable number.

981166613 is a deficient number, since it is larger than the sum of its proper divisors (167516587).

981166613 is a wasteful number, since it uses less digits than its factorization.

981166613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418747.

The product of its digits is 46656, while the sum is 41.

The square root of 981166613 is about 31323.5791856550. The cubic root of 981166613 is about 993.6823760109.

The spelling of 981166613 in words is "nine hundred eighty-one million, one hundred sixty-six thousand, six hundred thirteen".