1097911999 has 2 divisors, whose sum is σ = 1097912000. Its totient is φ = 1097911998.

The previous prime is 1097911987. The next prime is 1097912009. The reversal of 1097911999 is 9991197901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1097911999 - 2¹¹ = 1097909951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097911909) 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, 548955999 + 548956000.

It is an arithmetic number, because the mean of its divisors is an integer number (548956000).

Almost surely, 2^1097911999 is an apocalyptic number.

1097911999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097911999 is an equidigital number, since it uses as much as digits as its factorization.

1097911999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 55.

The square root of 1097911999 is about 33134.7551522567. The cubic root of 1097911999 is about 1031.6265496577.

The spelling of 1097911999 in words is "one billion, ninety-seven million, nine hundred eleven thousand, nine hundred ninety-nine".