1980331974 has 12 divisors (see below), whose sum is σ = 4290719316. Its totient is φ = 660110652.

The previous prime is 1980331967. The next prime is 1980331979. The reversal of 1980331974 is 4791330891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980331979) 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 5 ways as a sum of consecutive naturals, for example, 55009204 + ... + 55009239.

It is an arithmetic number, because the mean of its divisors is an integer number (357559943).

Almost surely, 2^1980331974 is an apocalyptic number.

1980331974 is an abundant number, since it is smaller than the sum of its proper divisors (2310387342).

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

1980331974 is a wasteful number, since it uses less digits than its factorization.

1980331974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110018451 (or 110018448 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1980331974 is about 44500.9210466480. The cubic root of 1980331974 is about 1255.7774105359. Note that the first 3 decimals are identical.

The spelling of 1980331974 in words is "one billion, nine hundred eighty million, three hundred thirty-one thousand, nine hundred seventy-four".