1944382087 has 2 divisors, whose sum is σ = 1944382088. Its totient is φ = 1944382086.

The previous prime is 1944382067. The next prime is 1944382109. The reversal of 1944382087 is 7802834491.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1944382087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944382067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972191043 + 972191044.

It is an arithmetic number, because the mean of its divisors is an integer number (972191044).

Almost surely, 2^1944382087 is an apocalyptic number.

1944382087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944382087 is an equidigital number, since it uses as much as digits as its factorization.

1944382087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1944382087 is about 44095.1481117821. The cubic root of 1944382087 is about 1248.1320552430.

The spelling of 1944382087 in words is "one billion, nine hundred forty-four million, three hundred eighty-two thousand, eighty-seven".