146681473 has 2 divisors, whose sum is σ = 146681474. Its totient is φ = 146681472.

The previous prime is 146681467. The next prime is 146681497. The reversal of 146681473 is 374186641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143233024 + 3448449 = 11968^2 + 1857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146681473 is a prime.

It is not a weakly prime, because it can be changed into another prime (146681573) 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, 73340736 + 73340737.

It is an arithmetic number, because the mean of its divisors is an integer number (73340737).

Almost surely, 2^146681473 is an apocalyptic number.

It is an amenable number.

146681473 is a deficient number, since it is larger than the sum of its proper divisors (1).

146681473 is an equidigital number, since it uses as much as digits as its factorization.

146681473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 146681473 is about 12111.2126973313. The cubic root of 146681473 is about 527.3817384984.

The spelling of 146681473 in words is "one hundred forty-six million, six hundred eighty-one thousand, four hundred seventy-three".