1154312005 has 16 divisors (see below), whose sum is σ = 1726971264. Its totient is φ = 719570880.

The previous prime is 1154311999. The next prime is 1154312011. The reversal of 1154312005 is 5002134511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1154311999) and next prime (1154312011).

It is not a de Polignac number, because 1154312005 - 2⁵ = 1154311973 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 15 ways as a sum of consecutive naturals, for example, 1498722 + ... + 1499491.

It is an arithmetic number, because the mean of its divisors is an integer number (107935704).

Almost surely, 2^1154312005 is an apocalyptic number.

It is an amenable number.

1154312005 is a deficient number, since it is larger than the sum of its proper divisors (572659259).

1154312005 is a wasteful number, since it uses less digits than its factorization.

1154312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998236.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1154312005 is about 33975.1674756726. The cubic root of 1154312005 is about 1048.9973815541.

Adding to 1154312005 its reverse (5002134511), we get a palindrome (6156446516).

The spelling of 1154312005 in words is "one billion, one hundred fifty-four million, three hundred twelve thousand, five".