618040456393 has 8 divisors (see below), whose sum is σ = 660641337216. Its totient is φ = 576750372000.

The previous prime is 618040456357. The next prime is 618040456447. The reversal of 618040456393 is 393654040816.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618040456393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618040456493) 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, 327698133 + ... + 327700018.

It is an arithmetic number, because the mean of its divisors is an integer number (82580167152).

Almost surely, 2^618040456393 is an apocalyptic number.

It is an amenable number.

618040456393 is a deficient number, since it is larger than the sum of its proper divisors (42600880823).

618040456393 is a wasteful number, since it uses less digits than its factorization.

618040456393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655398215.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 618040456393 in words is "six hundred eighteen billion, forty million, four hundred fifty-six thousand, three hundred ninety-three".