1887732044449 has 4 divisors (see below), whose sum is σ = 1948626626560. Its totient is φ = 1826837462340.

The previous prime is 1887732044321. The next prime is 1887732044453. The reversal of 1887732044449 is 9444402377881.

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 1887732044449 - 2⁷ = 1887732044321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1887732044459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30447291009 + ... + 30447291070.

It is an arithmetic number, because the mean of its divisors is an integer number (487156656640).

Almost surely, 2^{1887732044449} is an apocalyptic number.

It is an amenable number.

1887732044449 is a deficient number, since it is larger than the sum of its proper divisors (60894582111).

1887732044449 is an equidigital number, since it uses as much as digits as its factorization.

1887732044449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60894582110.

The product of its (nonzero) digits is 43352064, while the sum is 61.

The spelling of 1887732044449 in words is "one trillion, eight hundred eighty-seven billion, seven hundred thirty-two million, forty-four thousand, four hundred forty-nine".