1838054666721 has 24 divisors (see below), whose sum is σ = 3070157248704. Its totient is φ = 969523339680.

The previous prime is 1838054666711. The next prime is 1838054666729. The reversal of 1838054666721 is 1276664508381.

It is not a de Polignac number, because 1838054666721 - 2¹⁰ = 1838054665697 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1838054666729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480912445 + ... + 480916266.

It is an arithmetic number, because the mean of its divisors is an integer number (127923218696).

Almost surely, 2^{1838054666721} is an apocalyptic number.

It is an amenable number.

1838054666721 is a deficient number, since it is larger than the sum of its proper divisors (1232102581983).

1838054666721 is a wasteful number, since it uses less digits than its factorization.

1838054666721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961828741 (or 961828734 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 1838054666721 in words is "one trillion, eight hundred thirty-eight billion, fifty-four million, six hundred sixty-six thousand, seven hundred twenty-one".