18850091044 has 6 divisors (see below), whose sum is σ = 32987659334. Its totient is φ = 9425045520.

The previous prime is 18850091041. The next prime is 18850091047. The reversal of 18850091044 is 44019005881.

It is an interprime number because it is at equal distance from previous prime (18850091041) and next prime (18850091047).

It can be written as a sum of positive squares in only one way, i.e., 18628974144 + 221116900 = 136488^2 + 14870^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18850090988 and 18850091006.

It is not an unprimeable number, because it can be changed into a prime (18850091041) 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 as a sum of consecutive naturals, namely, 2356261377 + ... + 2356261384.

Almost surely, 2^18850091044 is an apocalyptic number.

It is an amenable number.

18850091044 is a deficient number, since it is larger than the sum of its proper divisors (14137568290).

18850091044 is a wasteful number, since it uses less digits than its factorization.

18850091044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712522765 (or 4712522763 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 18850091044 in words is "eighteen billion, eight hundred fifty million, ninety-one thousand, forty-four".