1445312133 has 16 divisors (see below), whose sum is σ = 2141799360. Its totient is φ = 963273168.

The previous prime is 1445312129. The next prime is 1445312153. The reversal of 1445312133 is 3312135441.

It is a happy number.

1445312133 is a `hidden beast` number, since 1 + 445 + 3 + 1 + 213 + 3 = 666.

It is not a de Polignac number, because 1445312133 - 2² = 1445312129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1445312097 and 1445312106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445312123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158566 + ... + 167432.

It is an arithmetic number, because the mean of its divisors is an integer number (133862460).

Almost surely, 2^1445312133 is an apocalyptic number.

It is an amenable number.

1445312133 is a deficient number, since it is larger than the sum of its proper divisors (696487227).

1445312133 is an equidigital number, since it uses as much as digits as its factorization.

1445312133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14913 (or 14907 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1445312133 is about 38017.2609876093. The cubic root of 1445312133 is about 1130.6301163656.

Adding to 1445312133 its reverse (3312135441), we get a palindrome (4757447574).

The spelling of 1445312133 in words is "one billion, four hundred forty-five million, three hundred twelve thousand, one hundred thirty-three".