1098365808 has 20 divisors (see below), whose sum is σ = 2837445128. Its totient is φ = 366121920.

The previous prime is 1098365797. The next prime is 1098365837. The reversal of 1098365808 is 8085638901.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 22882621 = 1098365808 / (1 + 0 + 9 + 8 + 3 + 6 + 5 + 8 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11441263 + ... + 11441358.

Almost surely, 2^1098365808 is an apocalyptic number.

It is an amenable number.

1098365808 is an abundant number, since it is smaller than the sum of its proper divisors (1739079320).

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

1098365808 is a wasteful number, since it uses less digits than its factorization.

1098365808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22882632 (or 22882626 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1098365808 is about 33141.6023752624. The cubic root of 1098365808 is about 1031.7686669753.

The spelling of 1098365808 in words is "one billion, ninety-eight million, three hundred sixty-five thousand, eight hundred eight".