1072655989 has 2 divisors, whose sum is σ = 1072655990. Its totient is φ = 1072655988.

The previous prime is 1072655971. The next prime is 1072656023. The reversal of 1072655989 is 9895562701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 889053489 + 183602500 = 29817^2 + 13550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072655989 - 2⁷ = 1072655861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1072655959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536327994 + 536327995.

It is an arithmetic number, because the mean of its divisors is an integer number (536327995).

Almost surely, 2^1072655989 is an apocalyptic number.

It is an amenable number.

1072655989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072655989 is an equidigital number, since it uses as much as digits as its factorization.

1072655989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The square root of 1072655989 is about 32751.4272818758. The cubic root of 1072655989 is about 1023.6547059290.

The spelling of 1072655989 in words is "one billion, seventy-two million, six hundred fifty-five thousand, nine hundred eighty-nine".