16364945 has 8 divisors (see below), whose sum is σ = 20117160. Its totient is φ = 12772480.

The previous prime is 16364941. The next prime is 16364981. The reversal of 16364945 is 54946361.

It can be written as a sum of positive squares in 4 ways, for example, as 99856 + 16265089 = 316^2 + 4033^2 .

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

It is not a de Polignac number, because 16364945 - 2² = 16364941 is a prime.

It is a super-2 number, since 2×16364945² = 535622849706050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16364899 and 16364908.

It is not an unprimeable number, because it can be changed into a prime (16364941) 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, 39710 + ... + 40119.

It is an arithmetic number, because the mean of its divisors is an integer number (2514645).

Almost surely, 2^16364945 is an apocalyptic number.

It is an amenable number.

16364945 is a deficient number, since it is larger than the sum of its proper divisors (3752215).

16364945 is an equidigital number, since it uses as much as digits as its factorization.

16364945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79875.

The product of its digits is 77760, while the sum is 38.

The square root of 16364945 is about 4045.3609233293. The cubic root of 16364945 is about 253.8856668143.

The spelling of 16364945 in words is "sixteen million, three hundred sixty-four thousand, nine hundred forty-five".