1166015605 has 16 divisors (see below), whose sum is σ = 1453552128. Its totient is φ = 897232000.

The previous prime is 1166015603. The next prime is 1166015633. The reversal of 1166015605 is 5065106611.

It is not a de Polignac number, because 1166015605 - 2¹ = 1166015603 is a prime.

It is a super-3 number, since 3×1166015605³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166015603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25501 + ... + 54610.

It is an arithmetic number, because the mean of its divisors is an integer number (90847008).

Almost surely, 2^1166015605 is an apocalyptic number.

It is an amenable number.

1166015605 is a deficient number, since it is larger than the sum of its proper divisors (287536523).

1166015605 is an equidigital number, since it uses as much as digits as its factorization.

1166015605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80228.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1166015605 is about 34146.9706562676. The cubic root of 1166015605 is about 1052.5307374755.

The spelling of 1166015605 in words is "one billion, one hundred sixty-six million, fifteen thousand, six hundred five".