388116266 has 4 divisors (see below), whose sum is σ = 582174402. Its totient is φ = 194058132.

The previous prime is 388116263. The next prime is 388116301. The reversal of 388116266 is 662611883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 321449041 + 66667225 = 17929^2 + 8165^2 .

It is not an unprimeable number, because it can be changed into a prime (388116263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97029065 + ... + 97029068.

Almost surely, 2^388116266 is an apocalyptic number.

388116266 is a deficient number, since it is larger than the sum of its proper divisors (194058136).

388116266 is a wasteful number, since it uses less digits than its factorization.

388116266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194058135.

The product of its digits is 82944, while the sum is 41.

The square root of 388116266 is about 19700.6666384668. Note that the first 4 decimals coincide. The cubic root of 388116266 is about 729.4361480670.

The spelling of 388116266 in words is "three hundred eighty-eight million, one hundred sixteen thousand, two hundred sixty-six".