1085015779 has 4 divisors (see below), whose sum is σ = 1120016320. Its totient is φ = 1050015240.

The previous prime is 1085015761. The next prime is 1085015797. The reversal of 1085015779 is 9775105801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9775105801 = 479 ⋅20407319.

It is an interprime number because it is at equal distance from previous prime (1085015761) and next prime (1085015797).

It is a cyclic number.

It is not a de Polignac number, because 1085015779 - 2¹⁷ = 1084884707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085015719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17500224 + ... + 17500285.

It is an arithmetic number, because the mean of its divisors is an integer number (280004080).

Almost surely, 2^1085015779 is an apocalyptic number.

1085015779 is a deficient number, since it is larger than the sum of its proper divisors (35000541).

1085015779 is an equidigital number, since it uses as much as digits as its factorization.

1085015779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35000540.

The product of its (nonzero) digits is 88200, while the sum is 43.

The square root of 1085015779 is about 32939.5776991752. The cubic root of 1085015779 is about 1027.5714231781.

The spelling of 1085015779 in words is "one billion, eighty-five million, fifteen thousand, seven hundred seventy-nine".