1000000098 has 48 divisors (see below), whose sum is σ = 2250963000. Its totient is φ = 320463360.

The previous prime is 1000000097. The next prime is 1000000103. The reversal of 1000000098 is 8900000001.

It can be written as a sum of positive squares in 4 ways, for example, as 934341489 + 65658609 = 30567^2 + 8103^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1000000098.

It is not an unprimeable number, because it can be changed into a prime (1000000093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121828 + ... + 129776.

Almost surely, 2^1000000098 is an apocalyptic number.

1000000098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000000098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125481500).

1000000098 is an abundant number, since it is smaller than the sum of its proper divisors (1250962902).

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

1000000098 is a wasteful number, since it uses less digits than its factorization.

1000000098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227 (or 8224 counting only the distinct ones).

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

The square root of 1000000098 is about 31622.7781511998. The cubic root of 1000000098 is about 1000.0000326667. Note that the first 4 decimals are identical.

Adding to 1000000098 its reverse (8900000001), we get a palindrome (9900000099).

The spelling of 1000000098 in words is "one billion, ninety-eight", and thus it is an aban number and an uban number.