1085884493 has 2 divisors, whose sum is σ = 1085884494. Its totient is φ = 1085884492.

The previous prime is 1085884489. The next prime is 1085884507. The reversal of 1085884493 is 3944885801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992124004 + 93760489 = 31498^2 + 9683^2 .

It is an emirp because it is prime and its reverse (3944885801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085884493 - 2² = 1085884489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085881493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542942246 + 542942247.

It is an arithmetic number, because the mean of its divisors is an integer number (542942247).

Almost surely, 2^1085884493 is an apocalyptic number.

It is an amenable number.

1085884493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085884493 is an equidigital number, since it uses as much as digits as its factorization.

1085884493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 1085884493 is about 32952.7615382990. The cubic root of 1085884493 is about 1027.8455904814.

The spelling of 1085884493 in words is "one billion, eighty-five million, eight hundred eighty-four thousand, four hundred ninety-three".