618789575434 has 4 divisors (see below), whose sum is σ = 928184363154. Its totient is φ = 309394787716.

The previous prime is 618789575407. The next prime is 618789575441. The reversal of 618789575434 is 434575987816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 616151212209 + 2638363225 = 784953^2 + 51365^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 618789575434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154697393857 + ... + 154697393860.

Almost surely, 2^618789575434 is an apocalyptic number.

618789575434 is a deficient number, since it is larger than the sum of its proper divisors (309394787720).

618789575434 is a wasteful number, since it uses less digits than its factorization.

618789575434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309394787719.

The product of its digits is 203212800, while the sum is 67.

The spelling of 618789575434 in words is "six hundred eighteen billion, seven hundred eighty-nine million, five hundred seventy-five thousand, four hundred thirty-four".