1011660165 has 32 divisors (see below), whose sum is σ = 1800378240. Its totient is φ = 538990848.

The previous prime is 1011660127. The next prime is 1011660203. The reversal of 1011660165 is 5610661101.

1011660165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1011660127) and next prime (1011660203).

It is not a de Polignac number, because 1011660165 - 2¹² = 1011656069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 148269 + ... + 154941.

It is an arithmetic number, because the mean of its divisors is an integer number (56261820).

Almost surely, 2^1011660165 is an apocalyptic number.

1011660165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011660165 is a deficient number, since it is larger than the sum of its proper divisors (788718075).

1011660165 is a wasteful number, since it uses less digits than its factorization.

1011660165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810 (or 7804 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1011660165 is about 31806.6056818391. The cubic root of 1011660165 is about 1003.8717121657.

The spelling of 1011660165 in words is "one billion, eleven million, six hundred sixty thousand, one hundred sixty-five".