993163823 has 2 divisors, whose sum is σ = 993163824. Its totient is φ = 993163822.

The previous prime is 993163813. The next prime is 993163837. The reversal of 993163823 is 328361399.

It is a weak prime.

It is an emirp because it is prime and its reverse (328361399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993163823 - 2¹⁴ = 993147439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993163813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496581911 + 496581912.

It is an arithmetic number, because the mean of its divisors is an integer number (496581912).

Almost surely, 2^993163823 is an apocalyptic number.

993163823 is a deficient number, since it is larger than the sum of its proper divisors (1).

993163823 is an equidigital number, since it uses as much as digits as its factorization.

993163823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 993163823 is about 31514.5017888590. The cubic root of 993163823 is about 997.7160619315.

The spelling of 993163823 in words is "nine hundred ninety-three million, one hundred sixty-three thousand, eight hundred twenty-three".