1663233623 has 2 divisors, whose sum is σ = 1663233624. Its totient is φ = 1663233622.

The previous prime is 1663233619. The next prime is 1663233643. The reversal of 1663233623 is 3263323661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1663233623 - 2² = 1663233619 is a prime.

It is a super-2 number, since 2×1663233623² = 5532692169355412258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663233613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831616811 + 831616812.

It is an arithmetic number, because the mean of its divisors is an integer number (831616812).

Almost surely, 2^1663233623 is an apocalyptic number.

1663233623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663233623 is an equidigital number, since it uses as much as digits as its factorization.

1663233623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 35.

The square root of 1663233623 is about 40782.7613459413. The cubic root of 1663233623 is about 1184.8164772435.

The spelling of 1663233623 in words is "one billion, six hundred sixty-three million, two hundred thirty-three thousand, six hundred twenty-three".