16118397 has 18 divisors (see below), whose sum is σ = 24736218. Its totient is φ = 10111872.

The previous prime is 16118381. The next prime is 16118407. The reversal of 16118397 is 79381161.

16118397 is a `hidden beast` number, since 1 + 611 + 8 + 39 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 5659641 + 10458756 = 2379^2 + 3234^2 .

It is not a de Polignac number, because 16118397 - 2⁴ = 16118381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16111397) 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 17 ways as a sum of consecutive naturals, for example, 498 + ... + 5699.

Almost surely, 2^16118397 is an apocalyptic number.

16118397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16118397 is a deficient number, since it is larger than the sum of its proper divisors (8617821).

16118397 is a wasteful number, since it uses less digits than its factorization.

16118397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237 (or 6217 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 16118397 is about 4014.7723472197. The cubic root of 16118397 is about 252.6042284467.

The spelling of 16118397 in words is "sixteen million, one hundred eighteen thousand, three hundred ninety-seven".