146463509 has 4 divisors (see below), whose sum is σ = 147340704. Its totient is φ = 145586316.

The previous prime is 146463503. The next prime is 146463511. The reversal of 146463509 is 905364641.

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: 905364641 = 31 ⋅29205311.

It is a cyclic number.

It is not a de Polignac number, because 146463509 - 2²⁰ = 145414933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146463503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438347 + ... + 438680.

It is an arithmetic number, because the mean of its divisors is an integer number (36835176).

Almost surely, 2^146463509 is an apocalyptic number.

It is an amenable number.

146463509 is a deficient number, since it is larger than the sum of its proper divisors (877195).

146463509 is an equidigital number, since it uses as much as digits as its factorization.

146463509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877194.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 146463509 is about 12102.2109137132. The cubic root of 146463509 is about 527.1203848423.

The spelling of 146463509 in words is "one hundred forty-six million, four hundred sixty-three thousand, five hundred nine".