163630340 has 12 divisors (see below), whose sum is σ = 343623756. Its totient is φ = 65452128.

The previous prime is 163630339. The next prime is 163630343. The reversal of 163630340 is 43036361.

It can be written as a sum of positive squares in 2 ways, for example, as 27394756 + 136235584 = 5234^2 + 11672^2 .

It is not an unprimeable number, because it can be changed into a prime (163630343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4090739 + ... + 4090778.

It is an arithmetic number, because the mean of its divisors is an integer number (28635313).

Almost surely, 2^163630340 is an apocalyptic number.

163630340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163630340 is an abundant number, since it is smaller than the sum of its proper divisors (179993416).

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

163630340 is a wasteful number, since it uses less digits than its factorization.

163630340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181526 (or 8181524 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 163630340 is about 12791.8075345121. The cubic root of 163630340 is about 546.9587960412.

The spelling of 163630340 in words is "one hundred sixty-three million, six hundred thirty thousand, three hundred forty".