1100639689 has 2 divisors, whose sum is σ = 1100639690. Its totient is φ = 1100639688.

The previous prime is 1100639681. The next prime is 1100639731. The reversal of 1100639689 is 9869360011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1049760000 + 50879689 = 32400^2 + 7133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100639689 - 2³ = 1100639681 is a prime.

It is a super-2 number, since 2×1100639689² = 2422815450004033442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100639681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550319844 + 550319845.

It is an arithmetic number, because the mean of its divisors is an integer number (550319845).

Almost surely, 2^1100639689 is an apocalyptic number.

It is an amenable number.

1100639689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100639689 is an equidigital number, since it uses as much as digits as its factorization.

1100639689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 1100639689 is about 33175.8901764519. The cubic root of 1100639689 is about 1032.4801791754.

The spelling of 1100639689 in words is "one billion, one hundred million, six hundred thirty-nine thousand, six hundred eighty-nine".