618816692149 has 32 divisors (see below), whose sum is σ = 657638092800. Its totient is φ = 581440126080.

The previous prime is 618816692141. The next prime is 618816692201. The reversal of 618816692149 is 941296618816.

It is a cyclic number.

It is not a de Polignac number, because 618816692149 - 2³ = 618816692141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618816692141) 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 31 ways as a sum of consecutive naturals, for example, 208846542 + ... + 208849504.

It is an arithmetic number, because the mean of its divisors is an integer number (20551190400).

Almost surely, 2^618816692149 is an apocalyptic number.

It is an amenable number.

618816692149 is a deficient number, since it is larger than the sum of its proper divisors (38821400651).

618816692149 is a wasteful number, since it uses less digits than its factorization.

618816692149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425.

The product of its digits is 8957952, while the sum is 61.

The spelling of 618816692149 in words is "six hundred eighteen billion, eight hundred sixteen million, six hundred ninety-two thousand, one hundred forty-nine".