618933172193 has 16 divisors (see below), whose sum is σ = 729381614976. Its totient is φ = 514233283200.

The previous prime is 618933172163. The next prime is 618933172303. The reversal of 618933172193 is 391271339816.

It is not a de Polignac number, because 618933172193 - 2⁶ = 618933172129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (618933172153) 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 15 ways as a sum of consecutive naturals, for example, 10019108 + ... + 10080693.

It is an arithmetic number, because the mean of its divisors is an integer number (45586350936).

Almost surely, 2^618933172193 is an apocalyptic number.

It is an amenable number.

618933172193 is a deficient number, since it is larger than the sum of its proper divisors (110448442783).

618933172193 is a wasteful number, since it uses less digits than its factorization.

618933172193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20099944.

The product of its digits is 1469664, while the sum is 53.

The spelling of 618933172193 in words is "six hundred eighteen billion, nine hundred thirty-three million, one hundred seventy-two thousand, one hundred ninety-three".