163523340 has 192 divisors, whose sum is σ = 551577600. Its totient is φ = 40061952.

The previous prime is 163523299. The next prime is 163523369. The reversal of 163523340 is 43325361.

It is a happy number.

163523340 is a `hidden beast` number, since 1 + 635 + 23 + 3 + 4 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 431271 + ... + 431649.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^163523340 is an apocalyptic number.

163523340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163523340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275788800).

163523340 is an abundant number, since it is smaller than the sum of its proper divisors (388054260).

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

163523340 is a wasteful number, since it uses less digits than its factorization.

163523340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 163523340 is about 12787.6244861976. The cubic root of 163523340 is about 546.8395488965.

The spelling of 163523340 in words is "one hundred sixty-three million, five hundred twenty-three thousand, three hundred forty".