163660516 has 6 divisors (see below), whose sum is σ = 286405910. Its totient is φ = 81830256.

The previous prime is 163660507. The next prime is 163660529. The reversal of 163660516 is 615066361.

It can be written as a sum of positive squares in only one way, i.e., 127780416 + 35880100 = 11304^2 + 5990^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20457561 + ... + 20457568.

Almost surely, 2^163660516 is an apocalyptic number.

It is an amenable number.

163660516 is a deficient number, since it is larger than the sum of its proper divisors (122745394).

163660516 is a wasteful number, since it uses less digits than its factorization.

163660516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40915133 (or 40915131 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 163660516 is about 12792.9869850633. The cubic root of 163660516 is about 546.9924165668.

The spelling of 163660516 in words is "one hundred sixty-three million, six hundred sixty thousand, five hundred sixteen".