485788138 has 12 divisors (see below), whose sum is σ = 800948610. Its totient is φ = 220812680.

The previous prime is 485788117. The next prime is 485788139. The reversal of 485788138 is 831887584.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 444661569 + 41126569 = 21087^2 + 6413^2 .

It is not an unprimeable number, because it can be changed into a prime (485788139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1003453 + ... + 1003936.

Almost surely, 2^485788138 is an apocalyptic number.

485788138 is a deficient number, since it is larger than the sum of its proper divisors (315160472).

485788138 is a wasteful number, since it uses less digits than its factorization.

485788138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007413 (or 2007402 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 485788138 is about 22040.6020335199. The cubic root of 485788138 is about 786.1081556672.

The spelling of 485788138 in words is "four hundred eighty-five million, seven hundred eighty-eight thousand, one hundred thirty-eight".