139098618 has 48 divisors (see below), whose sum is σ = 318539520. Its totient is φ = 43778592.

The previous prime is 139098613. The next prime is 139098623. The reversal of 139098618 is 816890931.

It is an interprime number because it is at equal distance from previous prime (139098613) and next prime (139098623).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139098611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30580 + ... + 34832.

It is an arithmetic number, because the mean of its divisors is an integer number (6636240).

Almost surely, 2^139098618 is an apocalyptic number.

139098618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139098618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159269760).

139098618 is an abundant number, since it is smaller than the sum of its proper divisors (179440902).

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

139098618 is a wasteful number, since it uses less digits than its factorization.

139098618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363 (or 4360 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 139098618 is about 11794.0077157852. The cubic root of 139098618 is about 518.1326240716.

The spelling of 139098618 in words is "one hundred thirty-nine million, ninety-eight thousand, six hundred eighteen".