245149169 has 2 divisors, whose sum is σ = 245149170. Its totient is φ = 245149168.

The previous prime is 245149141. The next prime is 245149183. The reversal of 245149169 is 961941542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155127025 + 90022144 = 12455^2 + 9488^2 .

It is a cyclic number.

It is not a de Polignac number, because 245149169 - 2¹⁶ = 245083633 is a prime.

It is a super-2 number, since 2×245149169² = 120196230122781122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245149139) 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, 122574584 + 122574585.

It is an arithmetic number, because the mean of its divisors is an integer number (122574585).

Almost surely, 2^245149169 is an apocalyptic number.

It is an amenable number.

245149169 is a deficient number, since it is larger than the sum of its proper divisors (1).

245149169 is an equidigital number, since it uses as much as digits as its factorization.

245149169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 245149169 is about 15657.2401463349. The cubic root of 245149169 is about 625.8594418472.

The spelling of 245149169 in words is "two hundred forty-five million, one hundred forty-nine thousand, one hundred sixty-nine".