1072287189 has 12 divisors (see below), whose sum is σ = 1639968876. Its totient is φ = 672807552.

The previous prime is 1072287143. The next prime is 1072287191. The reversal of 1072287189 is 9817822701.

It can be written as a sum of positive squares in 2 ways, for example, as 861892164 + 210395025 = 29358^2 + 14505^2 .

It is not a de Polignac number, because 1072287189 - 2⁷ = 1072287061 is a prime.

It is a super-2 number, since 2×1072287189² = 2299599631387043442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072287199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3504054 + ... + 3504359.

It is an arithmetic number, because the mean of its divisors is an integer number (136664073).

Almost surely, 2^1072287189 is an apocalyptic number.

It is an amenable number.

1072287189 is a deficient number, since it is larger than the sum of its proper divisors (567681687).

1072287189 is a wasteful number, since it uses less digits than its factorization.

1072287189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7008436 (or 7008433 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 1072287189 is about 32745.7965088651. The cubic root of 1072287189 is about 1023.5373750127.

The spelling of 1072287189 in words is "one billion, seventy-two million, two hundred eighty-seven thousand, one hundred eighty-nine".