618532235378 has 18 divisors (see below), whose sum is σ = 969931398639. Its totient is φ = 295807530172.

The previous prime is 618532235357. The next prime is 618532235423. The reversal of 618532235378 is 873532235816.

It can be written as a sum of positive squares in only one way, i.e., 309266117689 + 309266117689 = 556117^2 + 556117^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=556117.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25569293 + ... + 25593471.

Almost surely, 2^618532235378 is an apocalyptic number.

618532235378 is a deficient number, since it is larger than the sum of its proper divisors (351399163261).

618532235378 is an frugal number, since it uses more digits than its factorization.

618532235378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48406 (or 24204 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 53.

The spelling of 618532235378 in words is "six hundred eighteen billion, five hundred thirty-two million, two hundred thirty-five thousand, three hundred seventy-eight".