11958145 has 4 divisors (see below), whose sum is σ = 14349780. Its totient is φ = 9566512.

The previous prime is 11958119. The next prime is 11958181. The reversal of 11958145 is 54185911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 10705984 = 1119^2 + 3272^2 .

It is a cyclic number.

It is not a de Polignac number, because 11958145 - 2⁵ = 11958113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11958145.

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 3 ways as a sum of consecutive naturals, for example, 1195810 + ... + 1195819.

It is an arithmetic number, because the mean of its divisors is an integer number (3587445).

Almost surely, 2^11958145 is an apocalyptic number.

It is an amenable number.

11958145 is a deficient number, since it is larger than the sum of its proper divisors (2391635).

11958145 is an equidigital number, since it uses as much as digits as its factorization.

11958145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391634.

The product of its digits is 7200, while the sum is 34.

The square root of 11958145 is about 3458.0550892084. The cubic root of 11958145 is about 228.6763605819.

The spelling of 11958145 in words is "eleven million, nine hundred fifty-eight thousand, one hundred forty-five".