1649876789461 has 8 divisors (see below), whose sum is σ = 1654910808320. Its totient is φ = 1644845697648.

The previous prime is 1649876789413. The next prime is 1649876789507.

1649876789461 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 1649876789461 - 2⁷ = 1649876789333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649876786461) 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, 399955 + ... + 1860031.

It is an arithmetic number, because the mean of its divisors is an integer number (206863851040).

Almost surely, 2^{1649876789461} is an apocalyptic number.

It is an amenable number.

1649876789461 is a deficient number, since it is larger than the sum of its proper divisors (5034018859).

1649876789461 is a wasteful number, since it uses less digits than its factorization.

1649876789461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463523.

The product of its digits is 877879296, while the sum is 76.

The spelling of 1649876789461 in words is "one trillion, six hundred forty-nine billion, eight hundred seventy-six million, seven hundred eighty-nine thousand, four hundred sixty-one".