9418981 has 8 divisors (see below), whose sum is σ = 11065824. Its totient is φ = 7903920.

The previous prime is 9418973. The next prime is 9418987. The reversal of 9418981 is 1898149.

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 9418981 - 2³ = 9418973 is a prime.

It is a super-2 number, since 2×9418981² = 177434406156722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9418987) 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, 32791 + ... + 33076.

It is an arithmetic number, because the mean of its divisors is an integer number (1383228).

Almost surely, 2^9418981 is an apocalyptic number.

It is an amenable number.

9418981 is a deficient number, since it is larger than the sum of its proper divisors (1646843).

9418981 is a wasteful number, since it uses less digits than its factorization.

9418981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65891.

The product of its digits is 20736, while the sum is 40.

The square root of 9418981 is about 3069.0358420846. The cubic root of 9418981 is about 211.1873854787.

The spelling of 9418981 in words is "nine million, four hundred eighteen thousand, nine hundred eighty-one".