16345445 has 8 divisors (see below), whose sum is σ = 19636344. Its totient is φ = 13061824.

The previous prime is 16345423. The next prime is 16345447. The reversal of 16345445 is 54454361.

It can be written as a sum of positive squares in 4 ways, for example, as 1399489 + 14945956 = 1183^2 + 3866^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16345445 - 2¹⁶ = 16279909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16345447) 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, 7187 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (2454543).

Almost surely, 2^16345445 is an apocalyptic number.

It is an amenable number.

16345445 is a deficient number, since it is larger than the sum of its proper divisors (3290899).

16345445 is a wasteful number, since it uses less digits than its factorization.

16345445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639.

The product of its digits is 28800, while the sum is 32.

The square root of 16345445 is about 4042.9500367924. The cubic root of 16345445 is about 253.7847857704.

The spelling of 16345445 in words is "sixteen million, three hundred forty-five thousand, four hundred forty-five".