1320019087 has 2 divisors, whose sum is σ = 1320019088. Its totient is φ = 1320019086.

The previous prime is 1320019079. The next prime is 1320019097. The reversal of 1320019087 is 7809100231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320019087 - 2³ = 1320019079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320019097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660009543 + 660009544.

It is an arithmetic number, because the mean of its divisors is an integer number (660009544).

Almost surely, 2^1320019087 is an apocalyptic number.

1320019087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320019087 is an equidigital number, since it uses as much as digits as its factorization.

1320019087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1320019087 is about 36332.0669244127. The cubic root of 1320019087 is about 1096.9665977592.

The spelling of 1320019087 in words is "one billion, three hundred twenty million, nineteen thousand, eighty-seven".