2158080618 has 16 divisors (see below), whose sum is σ = 4319093376. Its totient is φ = 718871520.

The previous prime is 2158080607. The next prime is 2158080619. The reversal of 2158080618 is 8160808512.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2158080619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112546 + ... + 130317.

It is an arithmetic number, because the mean of its divisors is an integer number (269943336).

Almost surely, 2^2158080618 is an apocalyptic number.

2158080618 is an abundant number, since it is smaller than the sum of its proper divisors (2161012758).

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

2158080618 is a wasteful number, since it uses less digits than its factorization.

2158080618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244349.

The product of its (nonzero) digits is 30720, while the sum is 39.

The square root of 2158080618 is about 46455.1463026434. The cubic root of 2158080618 is about 1292.2778132215.

The spelling of 2158080618 in words is "two billion, one hundred fifty-eight million, eighty thousand, six hundred eighteen".