1089668501 has 4 divisors (see below), whose sum is σ = 1090577004. Its totient is φ = 1088760000.

The previous prime is 1089668491. The next prime is 1089668519. The reversal of 1089668501 is 1058669801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211731601 + 877936900 = 14551^2 + 29630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089668501 - 2¹⁰ = 1089667477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089668551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452450 + ... + 454851.

It is an arithmetic number, because the mean of its divisors is an integer number (272644251).

Almost surely, 2^1089668501 is an apocalyptic number.

It is an amenable number.

1089668501 is a deficient number, since it is larger than the sum of its proper divisors (908503).

1089668501 is an equidigital number, since it uses as much as digits as its factorization.

1089668501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908502.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 1089668501 is about 33010.1272490731. The cubic root of 1089668501 is about 1029.0381258101.

It can be divided in two parts, 10896 and 68501, that added together give a palindrome (79397).

The spelling of 1089668501 in words is "one billion, eighty-nine million, six hundred sixty-eight thousand, five hundred one".