18260349908 has 12 divisors (see below), whose sum is σ = 32735017812. Its totient is φ = 8907487680.

The previous prime is 18260349907. The next prime is 18260349959. The reversal of 18260349908 is 80994306281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5783906704 + 12476443204 = 76052^2 + 111698^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260349907) 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, 55671635 + ... + 55671962.

It is an arithmetic number, because the mean of its divisors is an integer number (2727918151).

Almost surely, 2^18260349908 is an apocalyptic number.

It is an amenable number.

18260349908 is a deficient number, since it is larger than the sum of its proper divisors (14474667904).

18260349908 is a wasteful number, since it uses less digits than its factorization.

18260349908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111343642 (or 111343640 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 18260349908 in words is "eighteen billion, two hundred sixty million, three hundred forty-nine thousand, nine hundred eight".