618855953 has 2 divisors, whose sum is σ = 618855954. Its totient is φ = 618855952.

The previous prime is 618855929. The next prime is 618856013. The reversal of 618855953 is 359558816.

618855953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493595089 + 125260864 = 22217^2 + 11192^2 .

It is a cyclic number.

It is not a de Polignac number, because 618855953 - 2⁶ = 618855889 is a prime.

It is a super-3 number, since 3×618855953³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (618855253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309427976 + 309427977.

It is an arithmetic number, because the mean of its divisors is an integer number (309427977).

Almost surely, 2^618855953 is an apocalyptic number.

It is an amenable number.

618855953 is a deficient number, since it is larger than the sum of its proper divisors (1).

618855953 is an equidigital number, since it uses as much as digits as its factorization.

618855953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 50.

The square root of 618855953 is about 24876.8155719336. The cubic root of 618855953 is about 852.1770963425.

The spelling of 618855953 in words is "six hundred eighteen million, eight hundred fifty-five thousand, nine hundred fifty-three".