1165820458 has 64 divisors (see below), whose sum is σ = 2119364352. Its totient is φ = 474439680.

The previous prime is 1165820437. The next prime is 1165820479. The reversal of 1165820458 is 8540285611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1165820437) and next prime (1165820479).

It is a self number, because there is not a number n which added to its sum of digits gives 1165820458.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2692210 + ... + 2692642.

It is an arithmetic number, because the mean of its divisors is an integer number (33115068).

Almost surely, 2^1165820458 is an apocalyptic number.

1165820458 is a deficient number, since it is larger than the sum of its proper divisors (953543894).

1165820458 is a wasteful number, since it uses less digits than its factorization.

1165820458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 1165820458 is about 34144.1130797097. The cubic root of 1165820458 is about 1052.4720162272.

The spelling of 1165820458 in words is "one billion, one hundred sixty-five million, eight hundred twenty thousand, four hundred fifty-eight".