1980709471 has 4 divisors (see below), whose sum is σ = 2133071752. Its totient is φ = 1828347192.

The previous prime is 1980709463. The next prime is 1980709477. The reversal of 1980709471 is 1749070891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1980709471 - 2³ = 1980709463 is a prime.

It is a super-3 number, since 3×1980709471³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980709477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76181121 + ... + 76181146.

It is an arithmetic number, because the mean of its divisors is an integer number (533267938).

Almost surely, 2^1980709471 is an apocalyptic number.

1980709471 is a deficient number, since it is larger than the sum of its proper divisors (152362281).

1980709471 is a wasteful number, since it uses less digits than its factorization.

1980709471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152362280.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 1980709471 is about 44505.1622960753. The cubic root of 1980709471 is about 1255.8571988564.

The spelling of 1980709471 in words is "one billion, nine hundred eighty million, seven hundred nine thousand, four hundred seventy-one".