157843823 has 2 divisors, whose sum is σ = 157843824. Its totient is φ = 157843822.

The previous prime is 157843801. The next prime is 157843853. The reversal of 157843823 is 328348751.

It is a weak prime.

It is an emirp because it is prime and its reverse (328348751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157843823 - 2¹⁶ = 157778287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157843853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78921911 + 78921912.

It is an arithmetic number, because the mean of its divisors is an integer number (78921912).

Almost surely, 2^157843823 is an apocalyptic number.

157843823 is a deficient number, since it is larger than the sum of its proper divisors (1).

157843823 is an equidigital number, since it uses as much as digits as its factorization.

157843823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 157843823 is about 12563.5911665415. The cubic root of 157843823 is about 540.4338340363.

The spelling of 157843823 in words is "one hundred fifty-seven million, eight hundred forty-three thousand, eight hundred twenty-three".