1165498791 has 8 divisors (see below), whose sum is σ = 1559061504. Its totient is φ = 774467640.

The previous prime is 1165498787. The next prime is 1165498819. The reversal of 1165498791 is 1978945611.

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

It is not a de Polignac number, because 1165498791 - 2² = 1165498787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165498781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631815 + ... + 633656.

It is an arithmetic number, because the mean of its divisors is an integer number (194882688).

Almost surely, 2^1165498791 is an apocalyptic number.

1165498791 is a deficient number, since it is larger than the sum of its proper divisors (393562713).

1165498791 is a wasteful number, since it uses less digits than its factorization.

1165498791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265781.

The product of its digits is 544320, while the sum is 51.

The square root of 1165498791 is about 34139.4023234151. The cubic root of 1165498791 is about 1052.3752098236.

The spelling of 1165498791 in words is "one billion, one hundred sixty-five million, four hundred ninety-eight thousand, seven hundred ninety-one".