1645441189153 has 2 divisors, whose sum is σ = 1645441189154. Its totient is φ = 1645441189152.

The previous prime is 1645441189129. The next prime is 1645441189177. The reversal of 1645441189153 is 3519811445461.

It is a balanced prime because it is at equal distance from previous prime (1645441189129) and next prime (1645441189177).

It can be written as a sum of positive squares in only one way, i.e., 1523785329889 + 121655859264 = 1234417^2 + 348792^2 .

It is a cyclic number.

It is not a de Polignac number, because 1645441189153 - 2⁹ = 1645441188641 is a prime.

It is a super-2 number, since 2×1645441189153² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1645441189153.

It is not a weakly prime, because it can be changed into another prime (1645441189123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822720594576 + 822720594577.

It is an arithmetic number, because the mean of its divisors is an integer number (822720594577).

Almost surely, 2^{1645441189153} is an apocalyptic number.

It is an amenable number.

1645441189153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645441189153 is an equidigital number, since it uses as much as digits as its factorization.

1645441189153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 52.

The spelling of 1645441189153 in words is "one trillion, six hundred forty-five billion, four hundred forty-one million, one hundred eighty-nine thousand, one hundred fifty-three".