42398739618 has 16 divisors (see below), whose sum is σ = 87532882176. Its totient is φ = 13677012720.

The previous prime is 42398739613. The next prime is 42398739623. The reversal of 42398739618 is 81693789324.

It is an interprime number because it is at equal distance from previous prime (42398739613) and next prime (42398739623).

It is not an unprimeable number, because it can be changed into a prime (42398739613) 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 7 ways as a sum of consecutive naturals, for example, 113974921 + ... + 113975292.

It is an arithmetic number, because the mean of its divisors is an integer number (5470805136).

Almost surely, 2^42398739618 is an apocalyptic number.

42398739618 is an abundant number, since it is smaller than the sum of its proper divisors (45134142558).

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

42398739618 is a wasteful number, since it uses less digits than its factorization.

42398739618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227950249.

The product of its digits is 15676416, while the sum is 60.

The spelling of 42398739618 in words is "forty-two billion, three hundred ninety-eight million, seven hundred thirty-nine thousand, six hundred eighteen".