1944290811 has 4 divisors (see below), whose sum is σ = 2592387752. Its totient is φ = 1296193872.

The previous prime is 1944290801. The next prime is 1944290827. The reversal of 1944290811 is 1180924491.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1944290811 - 2¹¹ = 1944288763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1944290811.

It is not an unprimeable number, because it can be changed into a prime (1944290801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324048466 + ... + 324048471.

It is an arithmetic number, because the mean of its divisors is an integer number (648096938).

Almost surely, 2^1944290811 is an apocalyptic number.

1944290811 is a deficient number, since it is larger than the sum of its proper divisors (648096941).

1944290811 is an equidigital number, since it uses as much as digits as its factorization.

1944290811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648096940.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1944290811 is about 44094.1131104822. The cubic root of 1944290811 is about 1248.1125243965.

The spelling of 1944290811 in words is "one billion, nine hundred forty-four million, two hundred ninety thousand, eight hundred eleven".