18840094544 has 10 divisors (see below), whose sum is σ = 36502683210. Its totient is φ = 9420047264.

The previous prime is 18840094543. The next prime is 18840094589. The reversal of 18840094544 is 44549004881.

It can be written as a sum of positive squares in only one way, i.e., 18790926400 + 49168144 = 137080^2 + 7012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18840094543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 588752939 + ... + 588752970.

It is an arithmetic number, because the mean of its divisors is an integer number (3650268321).

Almost surely, 2^18840094544 is an apocalyptic number.

It is an amenable number.

18840094544 is a deficient number, since it is larger than the sum of its proper divisors (17662588666).

18840094544 is a wasteful number, since it uses less digits than its factorization.

18840094544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177505917 (or 1177505911 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 18840094544 in words is "eighteen billion, eight hundred forty million, ninety-four thousand, five hundred forty-four".