1980436223 has 4 divisors (see below), whose sum is σ = 1986143880. Its totient is φ = 1974728568.

The previous prime is 1980436219. The next prime is 1980436231. The reversal of 1980436223 is 3226340891.

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 1980436223 - 2² = 1980436219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980433223) 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, 2853308 + ... + 2854001.

It is an arithmetic number, because the mean of its divisors is an integer number (496535970).

Almost surely, 2^1980436223 is an apocalyptic number.

1980436223 is a deficient number, since it is larger than the sum of its proper divisors (5707657).

1980436223 is an equidigital number, since it uses as much as digits as its factorization.

1980436223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707656.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1980436223 is about 44502.0923440685. The cubic root of 1980436223 is about 1255.7994457710.

The spelling of 1980436223 in words is "one billion, nine hundred eighty million, four hundred thirty-six thousand, two hundred twenty-three".