102818473 has 4 divisors (see below), whose sum is σ = 103259988. Its totient is φ = 102376960.

The previous prime is 102818459. The next prime is 102818477. The reversal of 102818473 is 374818201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374818201 = 367 ⋅1021303.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 95785369 = 2652^2 + 9787^2 .

It is a cyclic number.

It is not a de Polignac number, because 102818473 - 2⁹ = 102817961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102818477) 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, 220408 + ... + 220873.

It is an arithmetic number, because the mean of its divisors is an integer number (25814997).

Almost surely, 2^102818473 is an apocalyptic number.

It is an amenable number.

102818473 is a deficient number, since it is larger than the sum of its proper divisors (441515).

102818473 is an equidigital number, since it uses as much as digits as its factorization.

102818473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441514.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 102818473 is about 10139.9444278556. The cubic root of 102818473 is about 468.4792753067.

The spelling of 102818473 in words is "one hundred two million, eight hundred eighteen thousand, four hundred seventy-three".