16398361 has 4 divisors (see below), whose sum is σ = 18740992. Its totient is φ = 14055732.

The previous prime is 16398341. The next prime is 16398377. The reversal of 16398361 is 16389361.

16398361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16398361 - 2⁵ = 16398329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16398361.

It is not an unprimeable number, because it can be changed into a prime (16398341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171305 + ... + 1171318.

It is an arithmetic number, because the mean of its divisors is an integer number (4685248).

Almost surely, 2^16398361 is an apocalyptic number.

It is an amenable number.

16398361 is a deficient number, since it is larger than the sum of its proper divisors (2342631).

16398361 is an equidigital number, since it uses as much as digits as its factorization.

16398361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342630.

The product of its digits is 23328, while the sum is 37.

The square root of 16398361 is about 4049.4889801060. The cubic root of 16398361 is about 254.0583545425.

It can be divided in two parts, 1639 and 8361, that added together give a 4-th power (10000 = 10⁴).

The spelling of 16398361 in words is "sixteen million, three hundred ninety-eight thousand, three hundred sixty-one".