1145251011 has 16 divisors (see below), whose sum is σ = 1659223040. Its totient is φ = 699982560.

The previous prime is 1145251007. The next prime is 1145251013. The reversal of 1145251011 is 1101525411.

It is not a de Polignac number, because 1145251011 - 2² = 1145251007 is a prime.

It is a super-3 number, since 3×1145251011³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145251013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322300 + ... + 325833.

It is an arithmetic number, because the mean of its divisors is an integer number (103701440).

Almost surely, 2^1145251011 is an apocalyptic number.

1145251011 is a deficient number, since it is larger than the sum of its proper divisors (513972029).

1145251011 is a wasteful number, since it uses less digits than its factorization.

1145251011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648186.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1145251011 is about 33841.5574552945. The cubic root of 1145251011 is about 1046.2453993337.

Adding to 1145251011 its reverse (1101525411), we get a palindrome (2246776422).

The spelling of 1145251011 in words is "one billion, one hundred forty-five million, two hundred fifty-one thousand, eleven".