1980927900 has 720 divisors, whose sum is σ = 8066150400. Its totient is φ = 419126400.

The previous prime is 1980927881. The next prime is 1980927919. The reversal of 1980927900 is 97290891.

1980927900 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1980927881) and next prime (1980927919).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 63900885 + ... + 63900915.

Almost surely, 2^1980927900 is an apocalyptic number.

1980927900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1980927900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4033075200).

1980927900 is an abundant number, since it is smaller than the sum of its proper divisors (6085222500).

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

1980927900 is a wasteful number, since it uses less digits than its factorization.

1980927900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1980927900 is about 44507.6162021738. The cubic root of 1980927900 is about 1255.9033617007.

The spelling of 1980927900 in words is "one billion, nine hundred eighty million, nine hundred twenty-seven thousand, nine hundred".