1980776347 has 16 divisors (see below), whose sum is σ = 2190862080. Its totient is φ = 1775836000.

The previous prime is 1980776327. The next prime is 1980776377. The reversal of 1980776347 is 7436770891.

It is a cyclic number.

It is not a de Polignac number, because 1980776347 - 2⁷ = 1980776219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1980776294 and 1980776303.

It is not an unprimeable number, because it can be changed into a prime (1980776327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288804 + ... + 295582.

It is an arithmetic number, because the mean of its divisors is an integer number (136928880).

Almost surely, 2^1980776347 is an apocalyptic number.

1980776347 is a deficient number, since it is larger than the sum of its proper divisors (210085733).

1980776347 is a wasteful number, since it uses less digits than its factorization.

1980776347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 1980776347 is about 44505.9136183047. The cubic root of 1980776347 is about 1255.8713328089.

The spelling of 1980776347 in words is "one billion, nine hundred eighty million, seven hundred seventy-six thousand, three hundred forty-seven".