245842823 has 2 divisors, whose sum is σ = 245842824. Its totient is φ = 245842822.

The previous prime is 245842819. The next prime is 245842867. The reversal of 245842823 is 328248542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245842823 - 2² = 245842819 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245842813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122921411 + 122921412.

It is an arithmetic number, because the mean of its divisors is an integer number (122921412).

Almost surely, 2^245842823 is an apocalyptic number.

245842823 is a deficient number, since it is larger than the sum of its proper divisors (1).

245842823 is an equidigital number, since it uses as much as digits as its factorization.

245842823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122880, while the sum is 38.

The square root of 245842823 is about 15679.3757209909. The cubic root of 245842823 is about 626.4491795023.

The spelling of 245842823 in words is "two hundred forty-five million, eight hundred forty-two thousand, eight hundred twenty-three".