1326041987 has 2 divisors, whose sum is σ = 1326041988. Its totient is φ = 1326041986.

The previous prime is 1326041963. The next prime is 1326042013. The reversal of 1326041987 is 7891406231.

It is a weak prime.

It is an emirp because it is prime and its reverse (7891406231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326041987 - 2⁶ = 1326041923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326041917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663020993 + 663020994.

It is an arithmetic number, because the mean of its divisors is an integer number (663020994).

Almost surely, 2^1326041987 is an apocalyptic number.

1326041987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326041987 is an equidigital number, since it uses as much as digits as its factorization.

1326041987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1326041987 is about 36414.8594257894. The cubic root of 1326041987 is about 1098.6324567442.

The spelling of 1326041987 in words is "one billion, three hundred twenty-six million, forty-one thousand, nine hundred eighty-seven".