146158889 has 2 divisors, whose sum is σ = 146158890. Its totient is φ = 146158888.

The previous prime is 146158879. The next prime is 146158907. The reversal of 146158889 is 988851641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145998889 + 160000 = 12083^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 146158889 - 2⁸ = 146158633 is a prime.

It is not a weakly prime, because it can be changed into another prime (146158819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73079444 + 73079445.

It is an arithmetic number, because the mean of its divisors is an integer number (73079445).

Almost surely, 2^146158889 is an apocalyptic number.

It is an amenable number.

146158889 is a deficient number, since it is larger than the sum of its proper divisors (1).

146158889 is an equidigital number, since it uses as much as digits as its factorization.

146158889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 50.

The square root of 146158889 is about 12089.6190593418. The cubic root of 146158889 is about 526.7546899735.

The spelling of 146158889 in words is "one hundred forty-six million, one hundred fifty-eight thousand, eight hundred eighty-nine".