980619840 has 168 divisors, whose sum is σ = 3571509240. Its totient is φ = 246104064.

The previous prime is 980619803. The next prime is 980619853. The reversal of 980619840 is 48916089.

It can be written as a sum of positive squares in 4 ways, for example, as 112021056 + 868598784 = 10584^2 + 29472^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38946 + ... + 58974.

Almost surely, 2^980619840 is an apocalyptic number.

980619840 is a gapful number since it is divisible by the number (90) 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 980619840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785754620).

980619840 is an abundant number, since it is smaller than the sum of its proper divisors (2590889400).

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

980619840 is a wasteful number, since it uses less digits than its factorization.

980619840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20069 (or 20056 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 980619840 is about 31314.8501513260. The cubic root of 980619840 is about 993.4977591672.

It can be divided in two parts, 9806 and 19840, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 980619840 in words is "nine hundred eighty million, six hundred nineteen thousand, eight hundred forty".