1944358359253 has 16 divisors (see below), whose sum is σ = 2055875276800. Its totient is φ = 1833761592000.

The previous prime is 1944358359247. The next prime is 1944358359263. The reversal of 1944358359253 is 3529538534491.

It is a happy number.

It is not a de Polignac number, because 1944358359253 - 2⁵ = 1944358359221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1944358359191 and 1944358359200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944358359263) 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, 45459628 + ... + 45502378.

It is an arithmetic number, because the mean of its divisors is an integer number (128492204800).

Almost surely, 2^{1944358359253} is an apocalyptic number.

It is an amenable number.

1944358359253 is a deficient number, since it is larger than the sum of its proper divisors (111516917547).

1944358359253 is a wasteful number, since it uses less digits than its factorization.

1944358359253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53452.

The product of its digits is 69984000, while the sum is 61.

The spelling of 1944358359253 in words is "one trillion, nine hundred forty-four billion, three hundred fifty-eight million, three hundred fifty-nine thousand, two hundred fifty-three".