1085399578 has 64 divisors (see below), whose sum is σ = 1850936832. Its totient is φ = 474664960.

The previous prime is 1085399569. The next prime is 1085399597. The reversal of 1085399578 is 8759935801.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6273900 + ... + 6274072.

It is an arithmetic number, because the mean of its divisors is an integer number (28920888).

Almost surely, 2^1085399578 is an apocalyptic number.

1085399578 is a deficient number, since it is larger than the sum of its proper divisors (765537254).

1085399578 is a wasteful number, since it uses less digits than its factorization.

1085399578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 2721600, while the sum is 55.

The square root of 1085399578 is about 32945.4029873668. The cubic root of 1085399578 is about 1027.6925686952.

The spelling of 1085399578 in words is "one billion, eighty-five million, three hundred ninety-nine thousand, five hundred seventy-eight".