1089619061 has 2 divisors, whose sum is σ = 1089619062. Its totient is φ = 1089619060.

The previous prime is 1089619051. The next prime is 1089619099. The reversal of 1089619061 is 1609169801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975000625 + 114618436 = 31225^2 + 10706^2 .

It is an emirp because it is prime and its reverse (1609169801) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1906196801 and 1086916091.

It is a cyclic number.

It is not a de Polignac number, because 1089619061 - 2¹⁰ = 1089618037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089619051) 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 as a sum of consecutive naturals, namely, 544809530 + 544809531.

It is an arithmetic number, because the mean of its divisors is an integer number (544809531).

Almost surely, 2^1089619061 is an apocalyptic number.

It is an amenable number.

1089619061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089619061 is an equidigital number, since it uses as much as digits as its factorization.

1089619061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 1089619061 is about 33009.3783794848. The cubic root of 1089619061 is about 1029.0225625404.

It can be divided in two parts, 108 and 9619061, that added together give a palindrome (9619169).

The spelling of 1089619061 in words is "one billion, eighty-nine million, six hundred nineteen thousand, sixty-one".