1938284143 has 8 divisors (see below), whose sum is σ = 2009485296. Its totient is φ = 1868222400.

The previous prime is 1938284123. The next prime is 1938284171. The reversal of 1938284143 is 3414828391.

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

It is not a de Polignac number, because 1938284143 - 2¹⁷ = 1938153071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938284143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938284123) 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, 281388 + ... + 288193.

It is an arithmetic number, because the mean of its divisors is an integer number (251185662).

Almost surely, 2^1938284143 is an apocalyptic number.

1938284143 is a deficient number, since it is larger than the sum of its proper divisors (71201153).

1938284143 is an equidigital number, since it uses as much as digits as its factorization.

1938284143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569705.

The product of its digits is 165888, while the sum is 43.

The square root of 1938284143 is about 44025.9485190268. The cubic root of 1938284143 is about 1246.8258973869.

The spelling of 1938284143 in words is "one billion, nine hundred thirty-eight million, two hundred eighty-four thousand, one hundred forty-three".