1165441554 has 16 divisors (see below), whose sum is σ = 2589870240. Its totient is φ = 388480500.

The previous prime is 1165441549. The next prime is 1165441567. The reversal of 1165441554 is 4551445611.

1165441554 is a `hidden beast` number, since 1 + 1 + 65 + 4 + 41 + 554 = 666.

It is a Curzon 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, 10791072 + ... + 10791179.

It is an arithmetic number, because the mean of its divisors is an integer number (161866890).

Almost surely, 2^1165441554 is an apocalyptic number.

1165441554 is an abundant number, since it is smaller than the sum of its proper divisors (1424428686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165441554 is a wasteful number, since it uses less digits than its factorization.

1165441554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21582262 (or 21582256 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 1165441554 is about 34138.5640295546. The cubic root of 1165441554 is about 1052.3579823537.

The spelling of 1165441554 in words is "one billion, one hundred sixty-five million, four hundred forty-one thousand, five hundred fifty-four".