146513813 has 4 divisors (see below), whose sum is σ = 147447180. Its totient is φ = 145580448.

The previous prime is 146513789. The next prime is 146513867. The reversal of 146513813 is 318315641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318315641 = 7 ⋅45473663.

It can be written as a sum of positive squares in 2 ways, for example, as 17623204 + 128890609 = 4198^2 + 11353^2 .

It is not a de Polignac number, because 146513813 - 2⁸ = 146513557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 146513813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146512813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466448 + ... + 466761.

It is an arithmetic number, because the mean of its divisors is an integer number (36861795).

Almost surely, 2^146513813 is an apocalyptic number.

It is an amenable number.

146513813 is a deficient number, since it is larger than the sum of its proper divisors (933367).

146513813 is an equidigital number, since it uses as much as digits as its factorization.

146513813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933366.

The product of its digits is 8640, while the sum is 32.

The square root of 146513813 is about 12104.2890332312. The cubic root of 146513813 is about 527.1807257624.

The spelling of 146513813 in words is "one hundred forty-six million, five hundred thirteen thousand, eight hundred thirteen".