1097820587 has 2 divisors, whose sum is σ = 1097820588. Its totient is φ = 1097820586.

The previous prime is 1097820553. The next prime is 1097820617. The reversal of 1097820587 is 7850287901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1097820587 - 2⁶ = 1097820523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1097820547) 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, 548910293 + 548910294.

It is an arithmetic number, because the mean of its divisors is an integer number (548910294).

Almost surely, 2^1097820587 is an apocalyptic number.

1097820587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097820587 is an equidigital number, since it uses as much as digits as its factorization.

1097820587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 1097820587 is about 33133.3757259957. The cubic root of 1097820587 is about 1031.5979178355.

The spelling of 1097820587 in words is "one billion, ninety-seven million, eight hundred twenty thousand, five hundred eighty-seven".