1980325444 has 24 divisors (see below), whose sum is σ = 3671249400. Its totient is φ = 931454976.

The previous prime is 1980325441. The next prime is 1980325447. The reversal of 1980325444 is 4445230891.

It is an interprime number because it is at equal distance from previous prime (1980325441) and next prime (1980325447).

It can be written as a sum of positive squares in 4 ways, for example, as 1307545600 + 672779844 = 36160^2 + 25938^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1980325397 and 1980325406.

It is not an unprimeable number, because it can be changed into a prime (1980325441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158332 + ... + 170380.

It is an arithmetic number, because the mean of its divisors is an integer number (152968725).

Almost surely, 2^1980325444 is an apocalyptic number.

It is an amenable number.

1980325444 is a deficient number, since it is larger than the sum of its proper divisors (1690923956).

1980325444 is a wasteful number, since it uses less digits than its factorization.

1980325444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14487 (or 14485 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1980325444 is about 44500.8476773196. The cubic root of 1980325444 is about 1255.7760302563.

The spelling of 1980325444 in words is "one billion, nine hundred eighty million, three hundred twenty-five thousand, four hundred forty-four".