2149309178618 has 8 divisors (see below), whose sum is σ = 3684530020512. Its totient is φ = 921132505116.

The previous prime is 2149309178593. The next prime is 2149309178659. The reversal of 2149309178618 is 8168719039412.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76761042080 + ... + 76761042107.

It is an arithmetic number, because the mean of its divisors is an integer number (460566252564).

Almost surely, 2^{2149309178618} is an apocalyptic number.

2149309178618 is a deficient number, since it is larger than the sum of its proper divisors (1535220841894).

2149309178618 is a wasteful number, since it uses less digits than its factorization.

2149309178618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153522084196.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 2149309178618 in words is "two trillion, one hundred forty-nine billion, three hundred nine million, one hundred seventy-eight thousand, six hundred eighteen".