618258887 has 2 divisors, whose sum is σ = 618258888. Its totient is φ = 618258886.

The previous prime is 618258877. The next prime is 618258911. The reversal of 618258887 is 788852816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618258887 - 2²⁸ = 349823431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618258877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309129443 + 309129444.

It is an arithmetic number, because the mean of its divisors is an integer number (309129444).

Almost surely, 2^618258887 is an apocalyptic number.

618258887 is a deficient number, since it is larger than the sum of its proper divisors (1).

618258887 is an equidigital number, since it uses as much as digits as its factorization.

618258887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1720320, while the sum is 53.

The square root of 618258887 is about 24864.8122253115. The cubic root of 618258887 is about 851.9029508618.

The spelling of 618258887 in words is "six hundred eighteen million, two hundred fifty-eight thousand, eight hundred eighty-seven".