1073143889 has 2 divisors, whose sum is σ = 1073143890. Its totient is φ = 1073143888.

The previous prime is 1073143859. The next prime is 1073143901. The reversal of 1073143889 is 9883413701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1069813264 + 3330625 = 32708^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073143889 - 2⁸ = 1073143633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1073143859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536571944 + 536571945.

It is an arithmetic number, because the mean of its divisors is an integer number (536571945).

Almost surely, 2^1073143889 is an apocalyptic number.

It is an amenable number.

1073143889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073143889 is an equidigital number, since it uses as much as digits as its factorization.

1073143889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1073143889 is about 32758.8749654197. The cubic root of 1073143889 is about 1023.8098862886.

The spelling of 1073143889 in words is "one billion, seventy-three million, one hundred forty-three thousand, eight hundred eighty-nine".