1085391026 has 4 divisors (see below), whose sum is σ = 1628086542. Its totient is φ = 542695512.

The previous prime is 1085391019. The next prime is 1085391053. The reversal of 1085391026 is 6201935801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6201935801 = 17 ⋅364819753.

It can be written as a sum of positive squares in only one way, i.e., 964413025 + 120978001 = 31055^2 + 10999^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271347755 + ... + 271347758.

Almost surely, 2^1085391026 is an apocalyptic number.

1085391026 is a deficient number, since it is larger than the sum of its proper divisors (542695516).

1085391026 is an equidigital number, since it uses as much as digits as its factorization.

1085391026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542695515.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1085391026 is about 32945.2731966211. The cubic root of 1085391026 is about 1027.6898695817.

The spelling of 1085391026 in words is "one billion, eighty-five million, three hundred ninety-one thousand, twenty-six".