1942559387 has 2 divisors, whose sum is σ = 1942559388. Its totient is φ = 1942559386.

The previous prime is 1942559363. The next prime is 1942559401. The reversal of 1942559387 is 7839552491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1942559387 - 2¹² = 1942555291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1942559887) 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 as a sum of consecutive naturals, namely, 971279693 + 971279694.

It is an arithmetic number, because the mean of its divisors is an integer number (971279694).

Almost surely, 2^1942559387 is an apocalyptic number.

1942559387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942559387 is an equidigital number, since it uses as much as digits as its factorization.

1942559387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 1942559387 is about 44074.4754591589. The cubic root of 1942559387 is about 1247.7419258973.

The spelling of 1942559387 in words is "one billion, nine hundred forty-two million, five hundred fifty-nine thousand, three hundred eighty-seven".