1016501663 has 4 divisors (see below), whose sum is σ = 1027923120. Its totient is φ = 1005080208.

The previous prime is 1016501657. The next prime is 1016501669. The reversal of 1016501663 is 3661056101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3661056101 = 22817 ⋅160453.

It is an interprime number because it is at equal distance from previous prime (1016501657) and next prime (1016501669).

It is a cyclic number.

It is not a de Polignac number, because 1016501663 - 2¹² = 1016497567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016501669) 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, 5710595 + ... + 5710772.

It is an arithmetic number, because the mean of its divisors is an integer number (256980780).

Almost surely, 2^1016501663 is an apocalyptic number.

1016501663 is a deficient number, since it is larger than the sum of its proper divisors (11421457).

1016501663 is an equidigital number, since it uses as much as digits as its factorization.

1016501663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11421456.

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

The square root of 1016501663 is about 31882.6232139076. The cubic root of 1016501663 is about 1005.4705725959.

Adding to 1016501663 its reverse (3661056101), we get a palindrome (4677557764).

The spelling of 1016501663 in words is "one billion, sixteen million, five hundred one thousand, six hundred sixty-three".