2187001886838 has 16 divisors (see below), whose sum is σ = 4631298113520. Its totient is φ = 686118238976.

The previous prime is 2187001886837. The next prime is 2187001886863. The reversal of 2187001886838 is 8386881007812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187001886837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10720597383 + ... + 10720597586.

It is an arithmetic number, because the mean of its divisors is an integer number (289456132095).

Almost surely, 2^{2187001886838} is an apocalyptic number.

2187001886838 is an abundant number, since it is smaller than the sum of its proper divisors (2444296226682).

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

2187001886838 is a wasteful number, since it uses less digits than its factorization.

2187001886838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21441194991.

The product of its (nonzero) digits is 8257536, while the sum is 60.

The spelling of 2187001886838 in words is "two trillion, one hundred eighty-seven billion, one million, eight hundred eighty-six thousand, eight hundred thirty-eight".