163765134 has 48 divisors (see below), whose sum is σ = 387393552. Its totient is φ = 49693824.

The previous prime is 163765127. The next prime is 163765153. The reversal of 163765134 is 431567361.

163765134 is a `hidden beast` number, since 1 + 637 + 6 + 5 + 13 + 4 = 666.

It is a super-2 number, since 2×163765134² = 53638038228075912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12289 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (8070699).

Almost surely, 2^163765134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163765134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193696776).

163765134 is an abundant number, since it is smaller than the sum of its proper divisors (223628418).

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

163765134 is a wasteful number, since it uses less digits than its factorization.

163765134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681 (or 9678 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 163765134 is about 12797.0752127195. The cubic root of 163765134 is about 547.1089444968.

The spelling of 163765134 in words is "one hundred sixty-three million, seven hundred sixty-five thousand, one hundred thirty-four".