18786307400122 has 16 divisors (see below), whose sum is σ = 28565742817512. Its totient is φ = 9264395485440.

The previous prime is 18786307400111. The next prime is 18786307400131. The reversal of 18786307400122 is 22100470368781.

It can be written as a sum of positive squares in 4 ways, for example, as 10418299052121 + 8368008348001 = 3227739^2 + 2892751^2 .

It is a super-2 number, since 2×18786307400122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17242708 + ... + 18299824.

Almost surely, 2^{18786307400122} is an apocalyptic number.

18786307400122 is a deficient number, since it is larger than the sum of its proper divisors (9779435417390).

18786307400122 is a wasteful number, since it uses less digits than its factorization.

18786307400122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178913.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 18786307400122 in words is "eighteen trillion, seven hundred eighty-six billion, three hundred seven million, four hundred thousand, one hundred twenty-two".