146224919 has 4 divisors (see below), whose sum is σ = 146545344. Its totient is φ = 145904496.

The previous prime is 146224907. The next prime is 146224937. The reversal of 146224919 is 919422641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146224919 is a prime.

It is a super-2 number, since 2×146224919² = 42763453873113122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146224979) 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, 159527 + ... + 160440.

It is an arithmetic number, because the mean of its divisors is an integer number (36636336).

Almost surely, 2^146224919 is an apocalyptic number.

146224919 is a deficient number, since it is larger than the sum of its proper divisors (320425).

146224919 is an equidigital number, since it uses as much as digits as its factorization.

146224919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320424.

The product of its digits is 31104, while the sum is 38.

The square root of 146224919 is about 12092.3496062593. The cubic root of 146224919 is about 526.8340017781.

The spelling of 146224919 in words is "one hundred forty-six million, two hundred twenty-four thousand, nine hundred nineteen".