1944885253 has 2 divisors, whose sum is σ = 1944885254. Its totient is φ = 1944885252.

The previous prime is 1944885233. The next prime is 1944885269. The reversal of 1944885253 is 3525884491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1597361089 + 347524164 = 39967^2 + 18642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944885253 - 2⁹ = 1944884741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1944885197 and 1944885206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944885233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972442626 + 972442627.

It is an arithmetic number, because the mean of its divisors is an integer number (972442627).

Almost surely, 2^1944885253 is an apocalyptic number.

It is an amenable number.

1944885253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944885253 is an equidigital number, since it uses as much as digits as its factorization.

1944885253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 49.

The square root of 1944885253 is about 44100.8532003634. The cubic root of 1944885253 is about 1248.2397095724.

The spelling of 1944885253 in words is "one billion, nine hundred forty-four million, eight hundred eighty-five thousand, two hundred fifty-three".