18096981 has 8 divisors (see below), whose sum is σ = 27576384. Its totient is φ = 10341120.

The previous prime is 18096979. The next prime is 18096983. The reversal of 18096981 is 18969081.

It is an interprime number because it is at equal distance from previous prime (18096979) and next prime (18096983).

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

It is not a de Polignac number, because 18096981 - 2¹ = 18096979 is a prime.

It is a super-3 number, since 3×18096981³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18096983) 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, 430860 + ... + 430901.

It is an arithmetic number, because the mean of its divisors is an integer number (3447048).

Almost surely, 2^18096981 is an apocalyptic number.

It is an amenable number.

18096981 is a deficient number, since it is larger than the sum of its proper divisors (9479403).

18096981 is an equidigital number, since it uses as much as digits as its factorization.

18096981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861771.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 18096981 is about 4254.0546540918. The cubic root of 18096981 is about 262.5439672385.

The spelling of 18096981 in words is "eighteen million, ninety-six thousand, nine hundred eighty-one".