18860944 has 10 divisors (see below), whose sum is σ = 36543110. Its totient is φ = 9430464.

The previous prime is 18860929. The next prime is 18860981. The reversal of 18860944 is 44906881.

It can be written as a sum of positive squares in only one way, i.e., 17139600 + 1721344 = 4140^2 + 1312^2 .

It is a super-2 number, since 2×18860944² = 711470417142272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18860897 and 18860906.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 589389 + ... + 589420.

It is an arithmetic number, because the mean of its divisors is an integer number (3654311).

Almost surely, 2^18860944 is an apocalyptic number.

It is an amenable number.

18860944 is a deficient number, since it is larger than the sum of its proper divisors (17682166).

18860944 is a wasteful number, since it uses less digits than its factorization.

18860944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178817 (or 1178811 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 18860944 is about 4342.9188341483. The cubic root of 18860944 is about 266.1875926234.

The spelling of 18860944 in words is "eighteen million, eight hundred sixty thousand, nine hundred forty-four".