1980317677 has 8 divisors (see below), whose sum is σ = 2133770240. Its totient is φ = 1827025200.

The previous prime is 1980317659. The next prime is 1980317681. The reversal of 1980317677 is 7767130891.

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

It is a de Polignac number, because none of the positive numbers 2^k-1980317677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1980317677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980317627) 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 7 ways as a sum of consecutive naturals, for example, 13677 + ... + 64402.

It is an arithmetic number, because the mean of its divisors is an integer number (266721280).

Almost surely, 2^1980317677 is an apocalyptic number.

It is an amenable number.

1980317677 is a deficient number, since it is larger than the sum of its proper divisors (153452563).

1980317677 is a wasteful number, since it uses less digits than its factorization.

1980317677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80043.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 1980317677 is about 44500.7604092335. The cubic root of 1980317677 is about 1255.7743885017.

The spelling of 1980317677 in words is "one billion, nine hundred eighty million, three hundred seventeen thousand, six hundred seventy-seven".