618818432836 has 6 divisors (see below), whose sum is σ = 1082932257470. Its totient is φ = 309409216416.

The previous prime is 618818432803. The next prime is 618818432849. The reversal of 618818432836 is 638234818816.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 597544460100 + 21273972736 = 773010^2 + 145856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77352304101 + ... + 77352304108.

Almost surely, 2^618818432836 is an apocalyptic number.

It is an amenable number.

618818432836 is a deficient number, since it is larger than the sum of its proper divisors (464113824634).

618818432836 is a wasteful number, since it uses less digits than its factorization.

618818432836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154704608213 (or 154704608211 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 58.

The spelling of 618818432836 in words is "six hundred eighteen billion, eight hundred eighteen million, four hundred thirty-two thousand, eight hundred thirty-six".