1868101636506 has 24 divisors (see below), whose sum is σ = 4346195644800. Its totient is φ = 533743324632.

The previous prime is 1868101636501. The next prime is 1868101636529. The reversal of 1868101636506 is 6056361018681.

It is not an unprimeable number, because it can be changed into a prime (1868101636501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3177043306 + ... + 3177043893.

It is an arithmetic number, because the mean of its divisors is an integer number (181091485200).

Almost surely, 2^{1868101636506} is an apocalyptic number.

1868101636506 is an abundant number, since it is smaller than the sum of its proper divisors (2478094008294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868101636506 is a wasteful number, since it uses less digits than its factorization.

1868101636506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354087218 (or 6354087211 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 1868101636506 in words is "one trillion, eight hundred sixty-eight billion, one hundred one million, six hundred thirty-six thousand, five hundred six".