1663723163 has 16 divisors (see below), whose sum is σ = 1784135040. Its totient is φ = 1546776000.

The previous prime is 1663723151. The next prime is 1663723177. The reversal of 1663723163 is 3613273661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1663723163 - 2²⁴ = 1646945947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663723063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355388 + ... + 360038.

It is an arithmetic number, because the mean of its divisors is an integer number (111508440).

Almost surely, 2^1663723163 is an apocalyptic number.

1663723163 is a deficient number, since it is larger than the sum of its proper divisors (120411877).

1663723163 is a wasteful number, since it uses less digits than its factorization.

1663723163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018.

The product of its digits is 81648, while the sum is 38.

The square root of 1663723163 is about 40788.7627049412. The cubic root of 1663723163 is about 1184.9327082917.

The spelling of 1663723163 in words is "one billion, six hundred sixty-three million, seven hundred twenty-three thousand, one hundred sixty-three".