1980045344 has 48 divisors (see below), whose sum is σ = 4116837312. Its totient is φ = 935539968.

The previous prime is 1980045329. The next prime is 1980045359. The reversal of 1980045344 is 4435400891.

It is an interprime number because it is at equal distance from previous prime (1980045329) and next prime (1980045359).

It is a junction number, because it is equal to n+sod(n) for n = 1980045298 and 1980045307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44882 + ... + 77294.

It is an arithmetic number, because the mean of its divisors is an integer number (85767444).

Almost surely, 2^1980045344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1980045344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058418656).

1980045344 is an abundant number, since it is smaller than the sum of its proper divisors (2136791968).

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

1980045344 is a wasteful number, since it uses less digits than its factorization.

1980045344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32529 (or 32521 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1980045344 is about 44497.7004349663. The cubic root of 1980045344 is about 1255.7168212254.

The spelling of 1980045344 in words is "one billion, nine hundred eighty million, forty-five thousand, three hundred forty-four".