618637196 has 12 divisors (see below), whose sum is σ = 1082949000. Its totient is φ = 309223200.

The previous prime is 618637189. The next prime is 618637199. The reversal of 618637196 is 691736816.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 618637196.

It is not an unprimeable number, because it can be changed into a prime (618637199) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8105 + ... + 36096.

It is an arithmetic number, because the mean of its divisors is an integer number (90245750).

Almost surely, 2^618637196 is an apocalyptic number.

It is an amenable number.

618637196 is a deficient number, since it is larger than the sum of its proper divisors (464311804).

618637196 is a wasteful number, since it uses less digits than its factorization.

618637196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47704 (or 47702 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 618637196 is about 24872.4183785976. The cubic root of 618637196 is about 852.0766735791.

The spelling of 618637196 in words is "six hundred eighteen million, six hundred thirty-seven thousand, one hundred ninety-six".