980001000 has 384 divisors, whose sum is σ = 3811017600. Its totient is φ = 224640000.

The previous prime is 980000999. The next prime is 980001017. The reversal of 980001000 is 100089.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1880740 + ... + 1881260.

It is an arithmetic number, because the mean of its divisors is an integer number (9924525).

Almost surely, 2^980001000 is an apocalyptic number.

980001000 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 980001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1905508800).

980001000 is an abundant number, since it is smaller than the sum of its proper divisors (2831016600).

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

980001000 is a wasteful number, since it uses less digits than its factorization.

980001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 980001000 is about 31304.9676569071. The cubic root of 980001000 is about 993.2887262323.

Adding to 980001000 its reverse (100089), we get a palindrome (980101089).

The spelling of 980001000 in words is "nine hundred eighty million, one thousand".