1018008857 has 2 divisors, whose sum is σ = 1018008858. Its totient is φ = 1018008856.

The previous prime is 1018008853. The next prime is 1018008899. The reversal of 1018008857 is 7588008101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017865216 + 143641 = 31904^2 + 379^2 .

It is an emirp because it is prime and its reverse (7588008101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1018008857 - 2² = 1018008853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1018008857.

It is not a weakly prime, because it can be changed into another prime (1018008853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509004428 + 509004429.

It is an arithmetic number, because the mean of its divisors is an integer number (509004429).

Almost surely, 2^1018008857 is an apocalyptic number.

It is an amenable number.

1018008857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018008857 is an equidigital number, since it uses as much as digits as its factorization.

1018008857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 1018008857 is about 31906.2510646425. The cubic root of 1018008857 is about 1005.9672731562.

The spelling of 1018008857 in words is "one billion, eighteen million, eight thousand, eight hundred fifty-seven".