1072812889 has 2 divisors, whose sum is σ = 1072812890. Its totient is φ = 1072812888.

The previous prime is 1072812859. The next prime is 1072812893. The reversal of 1072812889 is 9882182701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 685392400 + 387420489 = 26180^2 + 19683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072812889 - 2¹¹ = 1072810841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1072812859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536406444 + 536406445.

It is an arithmetic number, because the mean of its divisors is an integer number (536406445).

Almost surely, 2^1072812889 is an apocalyptic number.

It is an amenable number.

1072812889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072812889 is an equidigital number, since it uses as much as digits as its factorization.

1072812889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 1072812889 is about 32753.8225097469. The cubic root of 1072812889 is about 1023.7046143168.

It can be divided in two parts, 1072812 and 889, that added together give a palindrome (1073701).

The spelling of 1072812889 in words is "one billion, seventy-two million, eight hundred twelve thousand, eight hundred eighty-nine".