44181801 has 8 divisors (see below), whose sum is σ = 65454560. Its totient is φ = 29454516.

The previous prime is 44181799. The next prime is 44181803. The reversal of 44181801 is 10818144.

It is an interprime number because it is at equal distance from previous prime (44181799) and next prime (44181803).

It is not a de Polignac number, because 44181801 - 2¹ = 44181799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1636363 = 44181801 / (4 + 4 + 1 + 8 + 1 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44181803) 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, 818155 + ... + 818208.

It is an arithmetic number, because the mean of its divisors is an integer number (8181820).

Almost surely, 2^44181801 is an apocalyptic number.

It is an amenable number.

44181801 is a deficient number, since it is larger than the sum of its proper divisors (21272759).

44181801 is a wasteful number, since it uses less digits than its factorization.

44181801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636372 (or 1636366 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 44181801 is about 6646.9392204232. The cubic root of 44181801 is about 353.5203933160.

Adding to 44181801 its reverse (10818144), we get a palindrome (54999945).

The spelling of 44181801 in words is "forty-four million, one hundred eighty-one thousand, eight hundred one".