1869776046961 has 16 divisors (see below), whose sum is σ = 1889995691584. Its totient is φ = 1849675673664.

The previous prime is 1869776046949. The next prime is 1869776046977. The reversal of 1869776046961 is 1696406779681.

It is a cyclic number.

It is not a de Polignac number, because 1869776046961 - 2²¹ = 1869773949809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1869776046361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42537751 + ... + 42581683.

It is an arithmetic number, because the mean of its divisors is an integer number (118124730724).

Almost surely, 2^{1869776046961} is an apocalyptic number.

It is an amenable number.

1869776046961 is a deficient number, since it is larger than the sum of its proper divisors (20219644623).

1869776046961 is a wasteful number, since it uses less digits than its factorization.

1869776046961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45280.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 1869776046961 in words is "one trillion, eight hundred sixty-nine billion, seven hundred seventy-six million, forty-six thousand, nine hundred sixty-one".