1085731844 has 6 divisors (see below), whose sum is σ = 1900030734. Its totient is φ = 542865920.

The previous prime is 1085731771. The next prime is 1085731849. The reversal of 1085731844 is 4481375801.

It can be written as a sum of positive squares in only one way, i.e., 1027971844 + 57760000 = 32062^2 + 7600^2 .

It is not an unprimeable number, because it can be changed into a prime (1085731849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135716477 + ... + 135716484.

It is an arithmetic number, because the mean of its divisors is an integer number (316671789).

Almost surely, 2^1085731844 is an apocalyptic number.

It is an amenable number.

1085731844 is a deficient number, since it is larger than the sum of its proper divisors (814298890).

1085731844 is a wasteful number, since it uses less digits than its factorization.

1085731844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271432965 (or 271432963 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 1085731844 is about 32950.4452777197. The cubic root of 1085731844 is about 1027.7974248447.

The spelling of 1085731844 in words is "one billion, eighty-five million, seven hundred thirty-one thousand, eight hundred forty-four".