248923819 has 2 divisors, whose sum is σ = 248923820. Its totient is φ = 248923818.

The previous prime is 248923793. The next prime is 248923847. The reversal of 248923819 is 918329842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 248923819 - 2¹³ = 248915627 is a prime.

It is a super-2 number, since 2×248923819² = 123926135331089522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248923219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124461909 + 124461910.

It is an arithmetic number, because the mean of its divisors is an integer number (124461910).

Almost surely, 2^248923819 is an apocalyptic number.

248923819 is a deficient number, since it is larger than the sum of its proper divisors (1).

248923819 is an equidigital number, since it uses as much as digits as its factorization.

248923819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 248923819 is about 15777.3197660439. The cubic root of 248923819 is about 629.0552893755.

The spelling of 248923819 in words is "two hundred forty-eight million, nine hundred twenty-three thousand, eight hundred nineteen".