1098394158 has 8 divisors (see below), whose sum is σ = 2196788328. Its totient is φ = 366131384.

The previous prime is 1098394151. The next prime is 1098394159. The reversal of 1098394158 is 8514938901.

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

1098394158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098394151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91532841 + ... + 91532852.

It is an arithmetic number, because the mean of its divisors is an integer number (274598541).

Almost surely, 2^1098394158 is an apocalyptic number.

1098394158 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.

1098394158 is a wasteful number, since it uses less digits than its factorization.

1098394158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183065698.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 1098394158 is about 33142.0300826609. The cubic root of 1098394158 is about 1031.7775439177. Note that the first 3 decimals are identical.

The spelling of 1098394158 in words is "one billion, ninety-eight million, three hundred ninety-four thousand, one hundred fifty-eight".