1838879781441 has 4 divisors (see below), whose sum is σ = 2451839708592. Its totient is φ = 1225919854292.

The previous prime is 1838879781413. The next prime is 1838879781443. The reversal of 1838879781441 is 1441879788381.

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 a cyclic number.

It is not a de Polignac number, because 1838879781441 - 2²³ = 1838871392833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1838879781443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306479963571 + ... + 306479963576.

It is an arithmetic number, because the mean of its divisors is an integer number (612959927148).

Almost surely, 2^{1838879781441} is an apocalyptic number.

It is an amenable number.

1838879781441 is a deficient number, since it is larger than the sum of its proper divisors (612959927151).

1838879781441 is an equidigital number, since it uses as much as digits as its factorization.

1838879781441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612959927150.

The product of its digits is 86704128, while the sum is 69.

The spelling of 1838879781441 in words is "one trillion, eight hundred thirty-eight billion, eight hundred seventy-nine million, seven hundred eighty-one thousand, four hundred forty-one".