1663324423 has 4 divisors (see below), whose sum is σ = 1676021688. Its totient is φ = 1650627160.

The previous prime is 1663324363. The next prime is 1663324451. The reversal of 1663324423 is 3244233661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3244233661 = 73 ⋅44441557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663324423 is a prime.

It is a super-2 number, since 2×1663324423² = 5533296272296565858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663324483) 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, 6348436 + ... + 6348697.

It is an arithmetic number, because the mean of its divisors is an integer number (419005422).

Almost surely, 2^1663324423 is an apocalyptic number.

1663324423 is a deficient number, since it is larger than the sum of its proper divisors (12697265).

1663324423 is a wasteful number, since it uses less digits than its factorization.

1663324423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12697264.

The product of its digits is 62208, while the sum is 34.

The square root of 1663324423 is about 40783.8745461978. The cubic root of 1663324423 is about 1184.8380375296.

The spelling of 1663324423 in words is "one billion, six hundred sixty-three million, three hundred twenty-four thousand, four hundred twenty-three".