1800879098 has 4 divisors (see below), whose sum is σ = 2701318650. Its totient is φ = 900439548.

The previous prime is 1800879061. The next prime is 1800879107. The reversal of 1800879098 is 8909780081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8909780081 = 4271 ⋅2086111.

It can be written as a sum of positive squares in only one way, i.e., 1240941529 + 559937569 = 35227^2 + 23663^2 .

It is a super-2 number, since 2×1800879098² = 6486331051226587208, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450219773 + ... + 450219776.

Almost surely, 2^1800879098 is an apocalyptic number.

1800879098 is a deficient number, since it is larger than the sum of its proper divisors (900439552).

1800879098 is an equidigital number, since it uses as much as digits as its factorization.

1800879098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900439551.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 1800879098 is about 42436.7658758299. The cubic root of 1800879098 is about 1216.6383984258.

The spelling of 1800879098 in words is "one billion, eight hundred million, eight hundred seventy-nine thousand, ninety-eight".