18489267193706 has 32 divisors (see below), whose sum is σ = 28786561874640. Its totient is φ = 8895898400256.

The previous prime is 18489267193697. The next prime is 18489267193729. The reversal of 18489267193706 is 60739176298481.

It can be written as a sum of positive squares in 8 ways, for example, as 12797182609225 + 5692084584481 = 3577315^2 + 2385809^2 .

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 18489267193706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93246686 + ... + 93444758.

Almost surely, 2^{18489267193706} is an apocalyptic number.

18489267193706 is a deficient number, since it is larger than the sum of its proper divisors (10297294680934).

18489267193706 is a wasteful number, since it uses less digits than its factorization.

18489267193706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203498.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 18489267193706 in words is "eighteen trillion, four hundred eighty-nine billion, two hundred sixty-seven million, one hundred ninety-three thousand, seven hundred six".