16398137 has 8 divisors (see below), whose sum is σ = 19387200. Its totient is φ = 13570704.

The previous prime is 16398133. The next prime is 16398139. The reversal of 16398137 is 73189361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16398137 - 2² = 16398133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16398137.

It is not an unprimeable number, because it can be changed into a prime (16398131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40187 + ... + 40592.

It is an arithmetic number, because the mean of its divisors is an integer number (2423400).

Almost surely, 2^16398137 is an apocalyptic number.

It is an amenable number.

16398137 is a deficient number, since it is larger than the sum of its proper divisors (2989063).

16398137 is an equidigital number, since it uses as much as digits as its factorization.

16398137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80815.

The product of its digits is 27216, while the sum is 38.

The square root of 16398137 is about 4049.4613222008. The cubic root of 16398137 is about 254.0571977332.

The spelling of 16398137 in words is "sixteen million, three hundred ninety-eight thousand, one hundred thirty-seven".