618728543 has 8 divisors (see below), whose sum is σ = 667893600. Its totient is φ = 571418848.

The previous prime is 618728507. The next prime is 618728557. The reversal of 618728543 is 345827816.

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

It is a cyclic number.

It is not a de Polignac number, because 618728543 - 2⁶ = 618728479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618728494 and 618728503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618728573) 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, 463148 + ... + 464481.

It is an arithmetic number, because the mean of its divisors is an integer number (83486700).

Almost surely, 2^618728543 is an apocalyptic number.

618728543 is a deficient number, since it is larger than the sum of its proper divisors (49165057).

618728543 is a wasteful number, since it uses less digits than its factorization.

618728543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927681.

The product of its digits is 322560, while the sum is 44.

The square root of 618728543 is about 24874.2546219982. The cubic root of 618728543 is about 852.1186102843.

The spelling of 618728543 in words is "six hundred eighteen million, seven hundred twenty-eight thousand, five hundred forty-three".