163365645 has 16 divisors (see below), whose sum is σ = 261547200. Its totient is φ = 87074304.

The previous prime is 163365637. The next prime is 163365647. The reversal of 163365645 is 546563361.

It is a happy number.

163365645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163365645 - 2³ = 163365637 is a prime.

It is a super-3 number, since 3×163365645³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163365647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37806 + ... + 41904.

It is an arithmetic number, because the mean of its divisors is an integer number (16346700).

Almost surely, 2^163365645 is an apocalyptic number.

163365645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163365645 is a deficient number, since it is larger than the sum of its proper divisors (98181555).

163365645 is a wasteful number, since it uses less digits than its factorization.

163365645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764.

The product of its digits is 194400, while the sum is 39.

The square root of 163365645 is about 12781.4570765621. The cubic root of 163365645 is about 546.6637093749.

The spelling of 163365645 in words is "one hundred sixty-three million, three hundred sixty-five thousand, six hundred forty-five".