1938230681286 has 16 divisors (see below), whose sum is σ = 4010132444400. Its totient is φ = 623798380128.

The previous prime is 1938230681239. The next prime is 1938230681287. The reversal of 1938230681286 is 6821860328391.

It is a super-2 number, since 2×1938230681286² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938230681287) 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, 5569628221 + ... + 5569628568.

It is an arithmetic number, because the mean of its divisors is an integer number (250633277775).

Almost surely, 2^{1938230681286} is an apocalyptic number.

1938230681286 is an abundant number, since it is smaller than the sum of its proper divisors (2071901763114).

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

1938230681286 is a wasteful number, since it uses less digits than its factorization.

1938230681286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139256823.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 1938230681286 in words is "one trillion, nine hundred thirty-eight billion, two hundred thirty million, six hundred eighty-one thousand, two hundred eighty-six".