254646813 has 4 divisors (see below), whose sum is σ = 339529088. Its totient is φ = 169764540.

The previous prime is 254646793. The next prime is 254646851. The reversal of 254646813 is 318646452.

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.

It is not a de Polignac number, because 254646813 - 2¹⁴ = 254630429 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 (254646863) 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, 42441133 + ... + 42441138.

It is an arithmetic number, because the mean of its divisors is an integer number (84882272).

Almost surely, 2^254646813 is an apocalyptic number.

It is an amenable number.

254646813 is a deficient number, since it is larger than the sum of its proper divisors (84882275).

254646813 is an equidigital number, since it uses as much as digits as its factorization.

254646813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84882274.

The product of its digits is 138240, while the sum is 39.

The square root of 254646813 is about 15957.6568768726. The cubic root of 254646813 is about 633.8396674514.

The spelling of 254646813 in words is "two hundred fifty-four million, six hundred forty-six thousand, eight hundred thirteen".