1944450125 has 16 divisors (see below), whose sum is σ = 2429981424. Its totient is φ = 1553440000.

The previous prime is 1944450121. The next prime is 1944450223. The reversal of 1944450125 is 5210544491.

It can be written as a sum of positive squares in 8 ways, for example, as 969824164 + 974625961 = 31142^2 + 31219^2 .

It is not a de Polignac number, because 1944450125 - 2² = 1944450121 is a prime.

It is a super-2 number, since 2×1944450125² = 7561772577225031250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944450121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84905 + ... + 105345.

It is an arithmetic number, because the mean of its divisors is an integer number (151873839).

Almost surely, 2^1944450125 is an apocalyptic number.

It is an amenable number.

1944450125 is a deficient number, since it is larger than the sum of its proper divisors (485531299).

1944450125 is an equidigital number, since it uses as much as digits as its factorization.

1944450125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21217 (or 21207 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1944450125 is about 44095.9195958084. The cubic root of 1944450125 is about 1248.1466133244.

The spelling of 1944450125 in words is "one billion, nine hundred forty-four million, four hundred fifty thousand, one hundred twenty-five".