44118181 has 2 divisors, whose sum is σ = 44118182. Its totient is φ = 44118180.

The previous prime is 44118169. The next prime is 44118197. The reversal of 44118181 is 18181144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26687556 + 17430625 = 5166^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 44118181 - 2¹⁵ = 44085413 is a prime.

It is a super-2 number, since 2×44118181² = 3892827789497522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44118121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22059090 + 22059091.

It is an arithmetic number, because the mean of its divisors is an integer number (22059091).

Almost surely, 2^44118181 is an apocalyptic number.

It is an amenable number.

44118181 is a deficient number, since it is larger than the sum of its proper divisors (1).

44118181 is an equidigital number, since it uses as much as digits as its factorization.

44118181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024, while the sum is 28.

The square root of 44118181 is about 6642.1518350607. The cubic root of 44118181 is about 353.3506267988.

The spelling of 44118181 in words is "forty-four million, one hundred eighteen thousand, one hundred eighty-one".