163930653 has 6 divisors (see below), whose sum is σ = 236788734. Its totient is φ = 109287096.

The previous prime is 163930639. The next prime is 163930667. The reversal of 163930653 is 356039361.

It is an interprime number because it is at equal distance from previous prime (163930639) and next prime (163930667).

It can be written as a sum of positive squares in only one way, i.e., 141063129 + 22867524 = 11877^2 + 4782^2 .

It is not a de Polignac number, because 163930653 - 2⁶ = 163930589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163930603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9107250 + ... + 9107267.

It is an arithmetic number, because the mean of its divisors is an integer number (39464789).

Almost surely, 2^163930653 is an apocalyptic number.

It is an amenable number.

163930653 is a deficient number, since it is larger than the sum of its proper divisors (72858081).

163930653 is a wasteful number, since it uses less digits than its factorization.

163930653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18214523 (or 18214520 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The square root of 163930653 is about 12803.5406431190. The cubic root of 163930653 is about 547.2932051946.

The spelling of 163930653 in words is "one hundred sixty-three million, nine hundred thirty thousand, six hundred fifty-three".