1085459819 has 2 divisors, whose sum is σ = 1085459820. Its totient is φ = 1085459818.

The previous prime is 1085459777. The next prime is 1085459833. The reversal of 1085459819 is 9189545801.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085459819 is a prime.

It is a super-2 number, since 2×1085459819² = 2356446037327025522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1085459839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542729909 + 542729910.

It is an arithmetic number, because the mean of its divisors is an integer number (542729910).

Almost surely, 2^1085459819 is an apocalyptic number.

1085459819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085459819 is an equidigital number, since it uses as much as digits as its factorization.

1085459819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 50.

The square root of 1085459819 is about 32946.3172296996. The cubic root of 1085459819 is about 1027.7115810736.

The spelling of 1085459819 in words is "one billion, eighty-five million, four hundred fifty-nine thousand, eight hundred nineteen".