248681869 has 2 divisors, whose sum is σ = 248681870. Its totient is φ = 248681868.

The previous prime is 248681843. The next prime is 248681887. The reversal of 248681869 is 968186842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248062500 + 619369 = 15750^2 + 787^2 .

It is a cyclic number.

It is not a de Polignac number, because 248681869 - 2¹⁵ = 248649101 is a prime.

It is a super-2 number, since 2×248681869² = 123685343938666322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248681369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124340934 + 124340935.

It is an arithmetic number, because the mean of its divisors is an integer number (124340935).

Almost surely, 2^248681869 is an apocalyptic number.

It is an amenable number.

248681869 is a deficient number, since it is larger than the sum of its proper divisors (1).

248681869 is an equidigital number, since it uses as much as digits as its factorization.

248681869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327104, while the sum is 52.

The square root of 248681869 is about 15769.6502497677. The cubic root of 248681869 is about 628.8514127216.

The spelling of 248681869 in words is "two hundred forty-eight million, six hundred eighty-one thousand, eight hundred sixty-nine".