1671386052849 has 4 divisors (see below), whose sum is σ = 2228514737136. Its totient is φ = 1114257368564.

The previous prime is 1671386052839. The next prime is 1671386052877. The reversal of 1671386052849 is 9482506831761.

It is a happy number.

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 1671386052849 - 2¹² = 1671386048753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1671386052792 and 1671386052801.

It is not an unprimeable number, because it can be changed into a prime (1671386052839) 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, 278564342139 + ... + 278564342144.

It is an arithmetic number, because the mean of its divisors is an integer number (557128684284).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1671386052849 = 3342772105698, but 3⋅1671386052849 = 5014158158547 is not.

Almost surely, 2^{1671386052849} is an apocalyptic number.

It is an amenable number.

1671386052849 is a deficient number, since it is larger than the sum of its proper divisors (557128684287).

1671386052849 is an equidigital number, since it uses as much as digits as its factorization.

1671386052849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557128684286.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 1671386052849 in words is "one trillion, six hundred seventy-one billion, three hundred eighty-six million, fifty-two thousand, eight hundred forty-nine".