1085638471 has 2 divisors, whose sum is σ = 1085638472. Its totient is φ = 1085638470.

The previous prime is 1085638457. The next prime is 1085638523. The reversal of 1085638471 is 1748365801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085638471 - 2¹⁷ = 1085507399 is a prime.

It is a super-3 number, since 3×1085638471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085608471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542819235 + 542819236.

It is an arithmetic number, because the mean of its divisors is an integer number (542819236).

Almost surely, 2^1085638471 is an apocalyptic number.

1085638471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085638471 is an equidigital number, since it uses as much as digits as its factorization.

1085638471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1085638471 is about 32949.0283771768. The cubic root of 1085638471 is about 1027.7679604544.

The spelling of 1085638471 in words is "one billion, eighty-five million, six hundred thirty-eight thousand, four hundred seventy-one".