1165531415 has 8 divisors (see below), whose sum is σ = 1412486208. Its totient is φ = 923192800.

The previous prime is 1165531399. The next prime is 1165531457. The reversal of 1165531415 is 5141355611.

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

It is not a de Polignac number, because 1165531415 - 2⁴ = 1165531399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153487 + ... + 1154496.

It is an arithmetic number, because the mean of its divisors is an integer number (176560776).

Almost surely, 2^1165531415 is an apocalyptic number.

1165531415 is a deficient number, since it is larger than the sum of its proper divisors (246954793).

1165531415 is a wasteful number, since it uses less digits than its factorization.

1165531415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308089.

The product of its digits is 9000, while the sum is 32.

The square root of 1165531415 is about 34139.8801257415. The cubic root of 1165531415 is about 1052.3850289010.

The spelling of 1165531415 in words is "one billion, one hundred sixty-five million, five hundred thirty-one thousand, four hundred fifteen".