618224871 has 16 divisors (see below), whose sum is σ = 930245760. Its totient is φ = 361761120.

The previous prime is 618224861. The next prime is 618224881. The reversal of 618224871 is 178422816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (618224861) and next prime (618224881).

It is not a de Polignac number, because 618224871 - 2²³ = 609836263 is a prime.

It is a super-2 number, since 2×618224871² = 764403982245933282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618224801) 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 15 ways as a sum of consecutive naturals, for example, 322045 + ... + 323958.

It is an arithmetic number, because the mean of its divisors is an integer number (58140360).

Almost surely, 2^618224871 is an apocalyptic number.

618224871 is a deficient number, since it is larger than the sum of its proper divisors (312020889).

618224871 is a wasteful number, since it uses less digits than its factorization.

618224871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646046.

The product of its digits is 43008, while the sum is 39.

The square root of 618224871 is about 24864.1281970633. The cubic root of 618224871 is about 851.8873269525.

The spelling of 618224871 in words is "six hundred eighteen million, two hundred twenty-four thousand, eight hundred seventy-one".