1000870000 has 100 divisors (see below), whose sum is σ = 2609945800. Its totient is φ = 369504000.

The previous prime is 1000869977. The next prime is 1000870007. The reversal of 1000870000 is 780001.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000870007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 126151 + ... + 133849.

It is an arithmetic number, because the mean of its divisors is an integer number (26099458).

Almost surely, 2^1000870000 is an apocalyptic number.

1000870000 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 1000870000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304972900).

1000870000 is an abundant number, since it is smaller than the sum of its proper divisors (1609075800).

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

1000870000 is an equidigital number, since it uses as much as digits as its factorization.

1000870000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740 (or 7719 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1000870000 is about 31636.5295188963. The cubic root of 1000870000 is about 1000.2899159406.

It can be divided in two parts, 10008 and 70000, that added together give a palindrome (80008).

The spelling of 1000870000 in words is "one billion, eight hundred seventy thousand".