44161631 has 4 divisors (see below), whose sum is σ = 46759392. Its totient is φ = 41563872.

The previous prime is 44161619. The next prime is 44161651. The reversal of 44161631 is 13616144.

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

It is a cyclic number.

It is not a de Polignac number, because 44161631 - 2¹⁸ = 43899487 is a prime.

It is a super-2 number, since 2×44161631² = 3900499305160322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44161631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44161651) 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, 1298855 + ... + 1298888.

It is an arithmetic number, because the mean of its divisors is an integer number (11689848).

Almost surely, 2^44161631 is an apocalyptic number.

44161631 is a deficient number, since it is larger than the sum of its proper divisors (2597761).

44161631 is a wasteful number, since it uses less digits than its factorization.

44161631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597760.

The product of its digits is 1728, while the sum is 26.

The square root of 44161631 is about 6645.4218075304. The cubic root of 44161631 is about 353.4665884195.

Adding to 44161631 its reverse (13616144), we get a palindrome (57777775).

The spelling of 44161631 in words is "forty-four million, one hundred sixty-one thousand, six hundred thirty-one".