2618854857 has 24 divisors (see below), whose sum is σ = 3891405960. Its totient is φ = 1695928320.

The previous prime is 2618854837. The next prime is 2618854871. The reversal of 2618854857 is 7584588162.

It can be written as a sum of positive squares in 4 ways, for example, as 2140820361 + 478034496 = 46269^2 + 21864^2 .

It is not a de Polignac number, because 2618854857 - 2⁷ = 2618854729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2618854837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207319 + ... + 219587.

It is an arithmetic number, because the mean of its divisors is an integer number (162141915).

Almost surely, 2^2618854857 is an apocalyptic number.

It is an amenable number.

2618854857 is a deficient number, since it is larger than the sum of its proper divisors (1272551103).

2618854857 is a wasteful number, since it uses less digits than its factorization.

2618854857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12953 (or 12950 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 2618854857 is about 51174.7482358243. The cubic root of 2618854857 is about 1378.3848037067.

The spelling of 2618854857 in words is "two billion, six hundred eighteen million, eight hundred fifty-four thousand, eight hundred fifty-seven".