1145212159 has 32 divisors (see below), whose sum is σ = 1479389184. Its totient is φ = 861632640.

The previous prime is 1145212153. The next prime is 1145212183. The reversal of 1145212159 is 9512125411.

It is a cyclic number.

It is not a de Polignac number, because 1145212159 - 2³ = 1145212151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145212159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145212151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377322 + ... + 380344.

It is an arithmetic number, because the mean of its divisors is an integer number (46230912).

Almost surely, 2^1145212159 is an apocalyptic number.

1145212159 is a deficient number, since it is larger than the sum of its proper divisors (334177025).

1145212159 is a wasteful number, since it uses less digits than its factorization.

1145212159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247.

The product of its digits is 3600, while the sum is 31.

The square root of 1145212159 is about 33840.9834224716. The cubic root of 1145212159 is about 1046.2335681033.

The spelling of 1145212159 in words is "one billion, one hundred forty-five million, two hundred twelve thousand, one hundred fifty-nine".