245819129 has 2 divisors, whose sum is σ = 245819130. Its totient is φ = 245819128.

The previous prime is 245819117. The next prime is 245819173. The reversal of 245819129 is 921918542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150307600 + 95511529 = 12260^2 + 9773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245819129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245813129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122909564 + 122909565.

It is an arithmetic number, because the mean of its divisors is an integer number (122909565).

Almost surely, 2^245819129 is an apocalyptic number.

It is an amenable number.

245819129 is a deficient number, since it is larger than the sum of its proper divisors (1).

245819129 is an equidigital number, since it uses as much as digits as its factorization.

245819129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 245819129 is about 15678.6201242329. The cubic root of 245819129 is about 626.4290534131.

The spelling of 245819129 in words is "two hundred forty-five million, eight hundred nineteen thousand, one hundred twenty-nine".