163433641 has 8 divisors (see below), whose sum is σ = 189340544. Its totient is φ = 138166560.

The previous prime is 163433639. The next prime is 163433657. The reversal of 163433641 is 146334361.

It is a happy number.

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

It is not a de Polignac number, because 163433641 - 2¹ = 163433639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163433671) 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, 159405 + ... + 160426.

It is an arithmetic number, because the mean of its divisors is an integer number (23667568).

Almost surely, 2^163433641 is an apocalyptic number.

It is an amenable number.

163433641 is a deficient number, since it is larger than the sum of its proper divisors (25906903).

163433641 is an equidigital number, since it uses as much as digits as its factorization.

163433641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319911.

The product of its digits is 15552, while the sum is 31.

The square root of 163433641 is about 12784.1167469638. The cubic root of 163433641 is about 546.7395429234.

The spelling of 163433641 in words is "one hundred sixty-three million, four hundred thirty-three thousand, six hundred forty-one".