163500730 has 16 divisors (see below), whose sum is σ = 311613480. Its totient is φ = 61553152.

The previous prime is 163500709. The next prime is 163500737. The reversal of 163500730 is 37005361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 163251729 + 249001 = 12777^2 + 499^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163500695 and 163500704.

It is not an unprimeable number, because it can be changed into a prime (163500737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480715 + ... + 481054.

Almost surely, 2^163500730 is an apocalyptic number.

163500730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163500730 is a deficient number, since it is larger than the sum of its proper divisors (148112750).

163500730 is a wasteful number, since it uses less digits than its factorization.

163500730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961793.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 163500730 is about 12786.7403977714. The cubic root of 163500730 is about 546.8143443149.

The spelling of 163500730 in words is "one hundred sixty-three million, five hundred thousand, seven hundred thirty".