245379811 has 2 divisors, whose sum is σ = 245379812. Its totient is φ = 245379810.

The previous prime is 245379773. The next prime is 245379907. The reversal of 245379811 is 118973542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245379811 is a prime.

It is a super-2 number, since 2×245379811² = 120422503292791442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245329811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122689905 + 122689906.

It is an arithmetic number, because the mean of its divisors is an integer number (122689906).

Almost surely, 2^245379811 is an apocalyptic number.

245379811 is a deficient number, since it is larger than the sum of its proper divisors (1).

245379811 is an equidigital number, since it uses as much as digits as its factorization.

245379811 is an odious number, because the sum of its binary digits is odd.

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

The square root of 245379811 is about 15664.6037613468. The cubic root of 245379811 is about 626.0556546653.

The spelling of 245379811 in words is "two hundred forty-five million, three hundred seventy-nine thousand, eight hundred eleven".