163345641 has 12 divisors (see below), whose sum is σ = 229861872. Its totient is φ = 103164984.

The previous prime is 163345631. The next prime is 163345643. The reversal of 163345641 is 146543361.

It is not a de Polignac number, because 163345641 - 2⁷ = 163345513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163345643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74331 + ... + 76496.

It is an arithmetic number, because the mean of its divisors is an integer number (19155156).

Almost surely, 2^163345641 is an apocalyptic number.

It is an amenable number.

163345641 is a deficient number, since it is larger than the sum of its proper divisors (66516231).

163345641 is a wasteful number, since it uses less digits than its factorization.

163345641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150868 (or 150849 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 163345641 is about 12780.6745127165. The cubic root of 163345641 is about 546.6413956112.

It can be divided in two parts, 1633 and 45641, that added together give a palindrome (47274).

The spelling of 163345641 in words is "one hundred sixty-three million, three hundred forty-five thousand, six hundred forty-one".