1944964247 has 2 divisors, whose sum is σ = 1944964248. Its totient is φ = 1944964246.

The previous prime is 1944964223. The next prime is 1944964277. The reversal of 1944964247 is 7424694491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1944964247 - 2¹² = 1944960151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1944964195 and 1944964204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944964277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972482123 + 972482124.

It is an arithmetic number, because the mean of its divisors is an integer number (972482124).

Almost surely, 2^1944964247 is an apocalyptic number.

1944964247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944964247 is an equidigital number, since it uses as much as digits as its factorization.

1944964247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 1944964247 is about 44101.7487975250. The cubic root of 1944964247 is about 1248.2566089606.

The spelling of 1944964247 in words is "one billion, nine hundred forty-four million, nine hundred sixty-four thousand, two hundred forty-seven".