1098808278 has 8 divisors (see below), whose sum is σ = 2197616568. Its totient is φ = 366269424.

The previous prime is 1098808273. The next prime is 1098808297. The reversal of 1098808278 is 8728088901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1098808278 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098808278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098808273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91567351 + ... + 91567362.

It is an arithmetic number, because the mean of its divisors is an integer number (274702071).

Almost surely, 2^1098808278 is an apocalyptic number.

1098808278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1098808278 is a wasteful number, since it uses less digits than its factorization.

1098808278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183134718.

The product of its (nonzero) digits is 516096, while the sum is 51.

The square root of 1098808278 is about 33148.2771498007. The cubic root of 1098808278 is about 1031.9071956238.

The spelling of 1098808278 in words is "one billion, ninety-eight million, eight hundred eight thousand, two hundred seventy-eight".