44618981 has 8 divisors (see below), whose sum is σ = 48880128. Its totient is φ = 40392000.

The previous prime is 44618957. The next prime is 44619007. The reversal of 44618981 is 18981644.

Added to its reverse (18981644) it gives a square (63600625 = 7975²).

44618981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-44618981 is a prime.

It is a super-2 number, since 2×44618981² = 3981706930956722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44618921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5765 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (6110016).

Almost surely, 2^44618981 is an apocalyptic number.

It is an amenable number.

44618981 is a deficient number, since it is larger than the sum of its proper divisors (4261147).

44618981 is a wasteful number, since it uses less digits than its factorization.

44618981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17083.

The product of its digits is 55296, while the sum is 41.

The square root of 44618981 is about 6679.7440819241. The cubic root of 44618981 is about 354.6825993268.

Adding to 44618981 its reverse (18981644), we get a square (63600625 = 7975²).

The spelling of 44618981 in words is "forty-four million, six hundred eighteen thousand, nine hundred eighty-one".