1980542812 has 6 divisors (see below), whose sum is σ = 3465949928. Its totient is φ = 990271404.

The previous prime is 1980542783. The next prime is 1980542819. The reversal of 1980542812 is 2182450891.

It is a super-3 number, since 3×1980542812³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980542819) 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 as a sum of consecutive naturals, namely, 247567848 + ... + 247567855.

Almost surely, 2^1980542812 is an apocalyptic number.

It is an amenable number.

1980542812 is a deficient number, since it is larger than the sum of its proper divisors (1485407116).

1980542812 is a wasteful number, since it uses less digits than its factorization.

1980542812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495135707 (or 495135705 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 1980542812 is about 44503.2899008601. The cubic root of 1980542812 is about 1255.8219748153.

The spelling of 1980542812 in words is "one billion, nine hundred eighty million, five hundred forty-two thousand, eight hundred twelve".