248629813 has 2 divisors, whose sum is σ = 248629814. Its totient is φ = 248629812.

The previous prime is 248629727. The next prime is 248629841. The reversal of 248629813 is 318926842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133217764 + 115412049 = 11542^2 + 10743^2 .

It is a cyclic number.

It is not a de Polignac number, because 248629813 - 2¹³ = 248621621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248629813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248626813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124314906 + 124314907.

It is an arithmetic number, because the mean of its divisors is an integer number (124314907).

Almost surely, 2^248629813 is an apocalyptic number.

It is an amenable number.

248629813 is a deficient number, since it is larger than the sum of its proper divisors (1).

248629813 is an equidigital number, since it uses as much as digits as its factorization.

248629813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 43.

The square root of 248629813 is about 15767.9996511923. Note that the first 3 decimals coincide. The cubic root of 248629813 is about 628.8075309894.

The spelling of 248629813 in words is "two hundred forty-eight million, six hundred twenty-nine thousand, eight hundred thirteen".