1001009098 has 4 divisors (see below), whose sum is σ = 1501513650. Its totient is φ = 500504548.

The previous prime is 1001008999. The next prime is 1001009099. The reversal of 1001009098 is 8909001001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8909001001 = 8999 ⋅989999.

It can be written as a sum of positive squares in only one way, i.e., 938013129 + 62995969 = 30627^2 + 7937^2 .

It is not an unprimeable number, because it can be changed into a prime (1001009099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250252273 + ... + 250252276.

Almost surely, 2^1001009098 is an apocalyptic number.

1001009098 is a deficient number, since it is larger than the sum of its proper divisors (500504552).

1001009098 is an equidigital number, since it uses as much as digits as its factorization.

1001009098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500504551.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1001009098 is about 31638.7278189247. The cubic root of 1001009098 is about 1000.3362529213.

The spelling of 1001009098 in words is "one billion, one million, nine thousand, ninety-eight".