1445211243 has 18 divisors (see below), whose sum is σ = 2428348884. Its totient is φ = 825834744.

The previous prime is 1445211221. The next prime is 1445211247. The reversal of 1445211243 is 3421125441.

1445211243 is a `hidden beast` number, since 1 + 445 + 211 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 1445211243 - 2⁵ = 1445211211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1445211247) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1638121 + ... + 1639002.

Almost surely, 2^1445211243 is an apocalyptic number.

1445211243 is a deficient number, since it is larger than the sum of its proper divisors (983137641).

1445211243 is a wasteful number, since it uses less digits than its factorization.

1445211243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277143 (or 3277133 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1445211243 is about 38015.9340671777. The cubic root of 1445211243 is about 1130.6038078785.

Adding to 1445211243 its reverse (3421125441), we get a palindrome (4866336684).

The spelling of 1445211243 in words is "one billion, four hundred forty-five million, two hundred eleven thousand, two hundred forty-three".