1098904798 has 4 divisors (see below), whose sum is σ = 1648357200. Its totient is φ = 549452398.

The previous prime is 1098904783. The next prime is 1098904817. The reversal of 1098904798 is 8974098901.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274726198 + ... + 274726201.

It is an arithmetic number, because the mean of its divisors is an integer number (412089300).

Almost surely, 2^1098904798 is an apocalyptic number.

1098904798 is a deficient number, since it is larger than the sum of its proper divisors (549452402).

1098904798 is an equidigital number, since it uses as much as digits as its factorization.

1098904798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549452401.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 1098904798 is about 33149.7330004331. The cubic root of 1098904798 is about 1031.9374091950.

The spelling of 1098904798 in words is "one billion, ninety-eight million, nine hundred four thousand, seven hundred ninety-eight".