1030000000 has 128 divisors (see below), whose sum is σ = 2589837120. Its totient is φ = 408000000.

The previous prime is 1029999983. The next prime is 1030000001. The reversal of 1030000000 is 301.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9999949 + ... + 10000051.

Almost surely, 2^1030000000 is an apocalyptic number.

1030000000 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 1030000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294918560).

1030000000 is an abundant number, since it is smaller than the sum of its proper divisors (1559837120).

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

1030000000 is an frugal number, since it uses more digits than its factorization.

1030000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 1030000000 is about 32093.6130717624. The cubic root of 1030000000 is about 1009.9016340500.

Adding to 1030000000 its reverse (301), we get a palindrome (1030000301).

The spelling of 1030000000 in words is "one billion, thirty million", and thus it is an aban number and an uban number.