248913491 has 2 divisors, whose sum is σ = 248913492. Its totient is φ = 248913490.

The previous prime is 248913479. The next prime is 248913517. The reversal of 248913491 is 194319842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 248913491 - 2²² = 244719187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (248912491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124456745 + 124456746.

It is an arithmetic number, because the mean of its divisors is an integer number (124456746).

Almost surely, 2^248913491 is an apocalyptic number.

248913491 is a deficient number, since it is larger than the sum of its proper divisors (1).

248913491 is an equidigital number, since it uses as much as digits as its factorization.

248913491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 248913491 is about 15776.9924573729. The cubic root of 248913491 is about 629.0465892935.

It can be divided in two parts, 24891 and 3491, that added together give a palindrome (28382).

The spelling of 248913491 in words is "two hundred forty-eight million, nine hundred thirteen thousand, four hundred ninety-one".