2143794280381 has 8 divisors (see below), whose sum is σ = 2316859492640. Its totient is φ = 1971894490992.

The previous prime is 2143794280363. The next prime is 2143794280427. The reversal of 2143794280381 is 1830824973412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143794280381 - 2⁵ = 2143794280349 is a prime.

It is a super-3 number, since 3×2143794280381³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143794280681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291351891 + ... + 291359248.

It is an arithmetic number, because the mean of its divisors is an integer number (289607436580).

Almost surely, 2^{2143794280381} is an apocalyptic number.

It is an amenable number.

2143794280381 is a deficient number, since it is larger than the sum of its proper divisors (173065212259).

2143794280381 is a wasteful number, since it uses less digits than its factorization.

2143794280381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582711435.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 2143794280381 in words is "two trillion, one hundred forty-three billion, seven hundred ninety-four million, two hundred eighty thousand, three hundred eighty-one".