618890101 has 2 divisors, whose sum is σ = 618890102. Its totient is φ = 618890100.

The previous prime is 618890093. The next prime is 618890123. The reversal of 618890101 is 101098816.

618890101 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., 449864100 + 169026001 = 21210^2 + 13001^2 .It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 101068819 and 918860101.

It is a cyclic number.

It is not a de Polignac number, because 618890101 - 2³ = 618890093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618890161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309445050 + 309445051.

It is an arithmetic number, because the mean of its divisors is an integer number (309445051).

Almost surely, 2^618890101 is an apocalyptic number.

It is an amenable number.

618890101 is a deficient number, since it is larger than the sum of its proper divisors (1).

618890101 is an equidigital number, since it uses as much as digits as its factorization.

618890101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 618890101 is about 24877.5019043312. The cubic root of 618890101 is about 852.1927702152.

The spelling of 618890101 in words is "six hundred eighteen million, eight hundred ninety thousand, one hundred one".