1089278995 has 32 divisors (see below), whose sum is σ = 1589943168. Its totient is φ = 699353088.

The previous prime is 1089278989. The next prime is 1089279071. The reversal of 1089278995 is 5998729801.

It is not a de Polignac number, because 1089278995 - 2¹⁹ = 1088754707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112569 + ... + 121861.

It is an arithmetic number, because the mean of its divisors is an integer number (49685724).

Almost surely, 2^1089278995 is an apocalyptic number.

1089278995 is a deficient number, since it is larger than the sum of its proper divisors (500664173).

1089278995 is a wasteful number, since it uses less digits than its factorization.

1089278995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The square root of 1089278995 is about 33004.2269262590. The cubic root of 1089278995 is about 1028.9155000479.

The spelling of 1089278995 in words is "one billion, eighty-nine million, two hundred seventy-eight thousand, nine hundred ninety-five".