1944280836 has 27 divisors (see below), whose sum is σ = 4915378741. Its totient is φ = 648005424.

The previous prime is 1944280831. The next prime is 1944280853. The reversal of 1944280836 is 6380824491.

It is a happy number.

The square root of 1944280836 is 44094.

It is a perfect power (a square), and thus also a powerful number.

1944280836 is a `hidden beast` number, since 194 + 428 + 0 + 8 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1339120836 + 605160000 = 36594^2 + 24600^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1944280791 and 1944280800.

It is not an unprimeable number, because it can be changed into a prime (1944280831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 260890 + ... + 268238.

Almost surely, 2^1944280836 is an apocalyptic number.

1944280836 is the 44094-th square number.

It is an amenable number.

1944280836 is an abundant number, since it is smaller than the sum of its proper divisors (2971097905).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1944280836 is an frugal number, since it uses more digits than its factorization.

1944280836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14708 (or 7354 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The cubic root of 1944280836 is about 1248.1103899518.

Multiplying 1944280836 by its product of nonzero digits (331776), we get a square (645065718644736 = 25398144²).

The spelling of 1944280836 in words is "one billion, nine hundred forty-four million, two hundred eighty thousand, eight hundred thirty-six".