1681160777 has 8 divisors (see below), whose sum is σ = 1706213376. Its totient is φ = 1656286912.

The previous prime is 1681160773. The next prime is 1681160797. The reversal of 1681160777 is 7770611861.

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 1681160777 - 2² = 1681160773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681160773) 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, 25673 + ... + 63414.

It is an arithmetic number, because the mean of its divisors is an integer number (213276672).

Almost surely, 2^1681160777 is an apocalyptic number.

It is an amenable number.

1681160777 is a deficient number, since it is larger than the sum of its proper divisors (25052599).

1681160777 is a wasteful number, since it uses less digits than its factorization.

1681160777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89367.

The product of its (nonzero) digits is 98784, while the sum is 44.

The square root of 1681160777 is about 41001.9606482422. The cubic root of 1681160777 is about 1189.0581198956.

The spelling of 1681160777 in words is "one billion, six hundred eighty-one million, one hundred sixty thousand, seven hundred seventy-seven".