163040634 has 32 divisors (see below), whose sum is σ = 381384000. Its totient is φ = 51486192.

The previous prime is 163040623. The next prime is 163040663. The reversal of 163040634 is 436040361.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 163040598 and 163040607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78429 + ... + 80480.

It is an arithmetic number, because the mean of its divisors is an integer number (11918250).

Almost surely, 2^163040634 is an apocalyptic number.

163040634 is an abundant number, since it is smaller than the sum of its proper divisors (218343366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163040634 is a wasteful number, since it uses less digits than its factorization.

163040634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158939 (or 158933 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 163040634 is about 12768.7365858960. The cubic root of 163040634 is about 546.3009450711.

Adding to 163040634 its reverse (436040361), we get a palindrome (599080995).

The spelling of 163040634 in words is "one hundred sixty-three million, forty thousand, six hundred thirty-four".