1980553692 has 48 divisors (see below), whose sum is σ = 5238719360. Its totient is φ = 577326528.

The previous prime is 1980553613. The next prime is 1980553693. The reversal of 1980553692 is 2963550891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980553693) 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, 331138 + ... + 337065.

Almost surely, 2^1980553692 is an apocalyptic number.

1980553692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980553692 is an abundant number, since it is smaller than the sum of its proper divisors (3258165668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1980553692 is a wasteful number, since it uses less digits than its factorization.

1980553692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668242 (or 668240 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 1980553692 is about 44503.4121388462. The cubic root of 1980553692 is about 1255.8242744067.

The spelling of 1980553692 in words is "one billion, nine hundred eighty million, five hundred fifty-three thousand, six hundred ninety-two".