163616501 has 2 divisors, whose sum is σ = 163616502. Its totient is φ = 163616500.

The previous prime is 163616477. The next prime is 163616507. The reversal of 163616501 is 105616361.

163616501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119924401 + 43692100 = 10951^2 + 6610^2 .

It is a cyclic number.

It is not a de Polignac number, because 163616501 - 2¹⁸ = 163354357 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163616507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81808250 + 81808251.

It is an arithmetic number, because the mean of its divisors is an integer number (81808251).

Almost surely, 2^163616501 is an apocalyptic number.

It is an amenable number.

163616501 is a deficient number, since it is larger than the sum of its proper divisors (1).

163616501 is an equidigital number, since it uses as much as digits as its factorization.

163616501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 163616501 is about 12791.2665909205. The cubic root of 163616501 is about 546.9433759665.

The spelling of 163616501 in words is "one hundred sixty-three million, six hundred sixteen thousand, five hundred one".