1980840416 has 12 divisors (see below), whose sum is σ = 3899779632. Its totient is φ = 990420192.

The previous prime is 1980840377. The next prime is 1980840439. The reversal of 1980840416 is 6140480891.

It is a super-3 number, since 3×1980840416³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30950600 + ... + 30950663.

It is an arithmetic number, because the mean of its divisors is an integer number (324981636).

Almost surely, 2^1980840416 is an apocalyptic number.

1980840416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1980840416 is a deficient number, since it is larger than the sum of its proper divisors (1918939216).

1980840416 is an equidigital number, since it uses as much as digits as its factorization.

1980840416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61901273 (or 61901265 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1980840416 is about 44506.6333932370. The cubic root of 1980840416 is about 1255.8848732157.

The spelling of 1980840416 in words is "one billion, nine hundred eighty million, eight hundred forty thousand, four hundred sixteen".