498256819 has 2 divisors, whose sum is σ = 498256820. Its totient is φ = 498256818.

The previous prime is 498256813. The next prime is 498256841. The reversal of 498256819 is 918652894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 498256819 - 2¹³ = 498248627 is a prime.

It is a super-2 number, since 2×498256819² = 496519715359997522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (498256813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249128409 + 249128410.

It is an arithmetic number, because the mean of its divisors is an integer number (249128410).

Almost surely, 2^498256819 is an apocalyptic number.

498256819 is a deficient number, since it is larger than the sum of its proper divisors (1).

498256819 is an equidigital number, since it uses as much as digits as its factorization.

498256819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 52.

The square root of 498256819 is about 22321.6670300406. The cubic root of 498256819 is about 792.7770762068. Note that the first 3 decimals are identical.

It can be divided in two parts, 49825 and 6819, that added together give a square (56644 = 238²).

The spelling of 498256819 in words is "four hundred ninety-eight million, two hundred fifty-six thousand, eight hundred nineteen".