4318981 has 4 divisors (see below), whose sum is σ = 4424364. Its totient is φ = 4213600.

The previous prime is 4318949. The next prime is 4318987. The reversal of 4318981 is 1898134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54756 + 4264225 = 234^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 4318981 - 2⁵ = 4318949 is a prime.

It is a super-2 number, since 2×4318981² = 37307193756722, which contains 22 as substring.

It is a Duffinian number.

4318981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4318987) 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, 52630 + ... + 52711.

It is an arithmetic number, because the mean of its divisors is an integer number (1106091).

Almost surely, 2^4318981 is an apocalyptic number.

4318981 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4318981 is a deficient number, since it is larger than the sum of its proper divisors (105383).

4318981 is a wasteful number, since it uses less digits than its factorization.

4318981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105382.

The product of its digits is 6912, while the sum is 34.

The square root of 4318981 is about 2078.2158213237. The cubic root of 4318981 is about 162.8522504723.

The spelling of 4318981 in words is "four million, three hundred eighteen thousand, nine hundred eighty-one".