163643134 has 4 divisors (see below), whose sum is σ = 245464704. Its totient is φ = 81821566.

The previous prime is 163643131. The next prime is 163643153. The reversal of 163643134 is 431346361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 163643096 and 163643105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163643131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40910782 + ... + 40910785.

It is an arithmetic number, because the mean of its divisors is an integer number (61366176).

Almost surely, 2^163643134 is an apocalyptic number.

163643134 is a deficient number, since it is larger than the sum of its proper divisors (81821570).

163643134 is an equidigital number, since it uses as much as digits as its factorization.

163643134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81821569.

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

The square root of 163643134 is about 12792.3076104353. The cubic root of 163643134 is about 546.9730509535.

Adding to 163643134 its reverse (431346361), we get a palindrome (594989495).

The spelling of 163643134 in words is "one hundred sixty-three million, six hundred forty-three thousand, one hundred thirty-four".