146473493 has 2 divisors, whose sum is σ = 146473494. Its totient is φ = 146473492.

The previous prime is 146473487. The next prime is 146473517. The reversal of 146473493 is 394374641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124925329 + 21548164 = 11177^2 + 4642^2 .

It is an emirp because it is prime and its reverse (394374641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146473493 - 2²⁴ = 129696277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146473493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146473423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73236746 + 73236747.

It is an arithmetic number, because the mean of its divisors is an integer number (73236747).

Almost surely, 2^146473493 is an apocalyptic number.

It is an amenable number.

146473493 is a deficient number, since it is larger than the sum of its proper divisors (1).

146473493 is an equidigital number, since it uses as much as digits as its factorization.

146473493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 146473493 is about 12102.6233932978. The cubic root of 146473493 is about 527.1323620016.

The spelling of 146473493 in words is "one hundred forty-six million, four hundred seventy-three thousand, four hundred ninety-three".