146645813 has 2 divisors, whose sum is σ = 146645814. Its totient is φ = 146645812.

The previous prime is 146645809. The next prime is 146645827. The reversal of 146645813 is 318546641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94906564 + 51739249 = 9742^2 + 7193^2 .

It is a cyclic number.

It is not a de Polignac number, because 146645813 - 2² = 146645809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146645833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73322906 + 73322907.

It is an arithmetic number, because the mean of its divisors is an integer number (73322907).

Almost surely, 2^146645813 is an apocalyptic number.

It is an amenable number.

146645813 is a deficient number, since it is larger than the sum of its proper divisors (1).

146645813 is an equidigital number, since it uses as much as digits as its factorization.

146645813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 146645813 is about 12109.7404183574. The cubic root of 146645813 is about 527.3389974564.

The spelling of 146645813 in words is "one hundred forty-six million, six hundred forty-five thousand, eight hundred thirteen".