1980677428 has 12 divisors (see below), whose sum is σ = 3498580512. Its totient is φ = 981083000.

The previous prime is 1980677417. The next prime is 1980677441. The reversal of 1980677428 is 8247760891.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2313448 + ... + 2314303.

It is an arithmetic number, because the mean of its divisors is an integer number (291548376).

Almost surely, 2^1980677428 is an apocalyptic number.

It is an amenable number.

1980677428 is a deficient number, since it is larger than the sum of its proper divisors (1517903084).

1980677428 is a wasteful number, since it uses less digits than its factorization.

1980677428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627862 (or 4627860 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 1980677428 is about 44504.8023026729. The cubic root of 1980677428 is about 1255.8504265946.

The spelling of 1980677428 in words is "one billion, nine hundred eighty million, six hundred seventy-seven thousand, four hundred twenty-eight".