146493473 has 4 divisors (see below), whose sum is σ = 167421120. Its totient is φ = 125565828.

The previous prime is 146493469. The next prime is 146493491. The reversal of 146493473 is 374394641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 374394641 = 2957 ⋅126613.

It is a cyclic number.

It is not a de Polignac number, because 146493473 - 2² = 146493469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146493473.

It is not an unprimeable number, because it can be changed into a prime (146493443) 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 in 3 ways as a sum of consecutive naturals, for example, 10463813 + ... + 10463826.

It is an arithmetic number, because the mean of its divisors is an integer number (41855280).

Almost surely, 2^146493473 is an apocalyptic number.

It is an amenable number.

146493473 is a deficient number, since it is larger than the sum of its proper divisors (20927647).

146493473 is an equidigital number, since it uses as much as digits as its factorization.

146493473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20927646.

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

The square root of 146493473 is about 12103.4488060222. The cubic root of 146493473 is about 527.1563290815.

The spelling of 146493473 in words is "one hundred forty-six million, four hundred ninety-three thousand, four hundred seventy-three".