1438881141 has 4 divisors (see below), whose sum is σ = 1918508192. Its totient is φ = 959254092.

The previous prime is 1438881113. The next prime is 1438881167. The reversal of 1438881141 is 1411888341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1438881141 - 2¹³ = 1438872949 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 1438881141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438881181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239813521 + ... + 239813526.

It is an arithmetic number, because the mean of its divisors is an integer number (479627048).

Almost surely, 2^1438881141 is an apocalyptic number.

It is an amenable number.

1438881141 is a deficient number, since it is larger than the sum of its proper divisors (479627051).

1438881141 is an equidigital number, since it uses as much as digits as its factorization.

1438881141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479627050.

The product of its digits is 24576, while the sum is 39.

The square root of 1438881141 is about 37932.5867955245. The cubic root of 1438881141 is about 1128.9506903682.

The spelling of 1438881141 in words is "one billion, four hundred thirty-eight million, eight hundred eighty-one thousand, one hundred forty-one".