1089776243 has 2 divisors, whose sum is σ = 1089776244. Its totient is φ = 1089776242.

The previous prime is 1089776209. The next prime is 1089776287. The reversal of 1089776243 is 3426779801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089776243 - 2¹² = 1089772147 is a prime.

It is a super-2 number, since 2×1089776243² = 2375224519614390098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1089770243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544888121 + 544888122.

It is an arithmetic number, because the mean of its divisors is an integer number (544888122).

Almost surely, 2^1089776243 is an apocalyptic number.

1089776243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089776243 is an equidigital number, since it uses as much as digits as its factorization.

1089776243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1089776243 is about 33011.7591624560. The cubic root of 1089776243 is about 1029.0720403972.

The spelling of 1089776243 in words is "one billion, eighty-nine million, seven hundred seventy-six thousand, two hundred forty-three".