1165161405 has 8 divisors (see below), whose sum is σ = 1864258272. Its totient is φ = 621419408.

The previous prime is 1165161379. The next prime is 1165161433. The reversal of 1165161405 is 5041615611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1165161405 - 2¹⁷ = 1165030333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38838699 + ... + 38838728.

It is an arithmetic number, because the mean of its divisors is an integer number (233032284).

Almost surely, 2^1165161405 is an apocalyptic number.

1165161405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1165161405 is a deficient number, since it is larger than the sum of its proper divisors (699096867).

1165161405 is an equidigital number, since it uses as much as digits as its factorization.

1165161405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77677435.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1165161405 is about 34134.4606666049. The cubic root of 1165161405 is about 1052.2736536112.

The spelling of 1165161405 in words is "one billion, one hundred sixty-five million, one hundred sixty-one thousand, four hundred five".