1445911133 has 2 divisors, whose sum is σ = 1445911134. Its totient is φ = 1445911132.

The previous prime is 1445911111. The next prime is 1445911141. The reversal of 1445911133 is 3311195441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751746724 + 694164409 = 27418^2 + 26347^2 .

It is an emirp because it is prime and its reverse (3311195441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445911133 - 2¹⁸ = 1445648989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445911133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445911433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722955566 + 722955567.

It is an arithmetic number, because the mean of its divisors is an integer number (722955567).

Almost surely, 2^1445911133 is an apocalyptic number.

It is an amenable number.

1445911133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445911133 is an equidigital number, since it uses as much as digits as its factorization.

1445911133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 1445911133 is about 38025.1381720041. The cubic root of 1445911133 is about 1130.7862888365.

The spelling of 1445911133 in words is "one billion, four hundred forty-five million, nine hundred eleven thousand, one hundred thirty-three".