245107031809 has 2 divisors, whose sum is σ = 245107031810. Its totient is φ = 245107031808.

The previous prime is 245107031797. The next prime is 245107031821. The reversal of 245107031809 is 908130701542.

It is a balanced prime because it is at equal distance from previous prime (245107031797) and next prime (245107031821).

It can be written as a sum of positive squares in only one way, i.e., 244873553409 + 233478400 = 494847^2 + 15280^2 .

It is a cyclic number.

It is not a de Polignac number, because 245107031809 - 2¹⁷ = 245106900737 is a prime.

It is not a weakly prime, because it can be changed into another prime (245107031839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122553515904 + 122553515905.

It is an arithmetic number, because the mean of its divisors is an integer number (122553515905).

Almost surely, 2^245107031809 is an apocalyptic number.

It is an amenable number.

245107031809 is a deficient number, since it is larger than the sum of its proper divisors (1).

245107031809 is an equidigital number, since it uses as much as digits as its factorization.

245107031809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 245107031809 in words is "two hundred forty-five billion, one hundred seven million, thirty-one thousand, eight hundred nine".