8891618101 has 2 divisors, whose sum is σ = 8891618102. Its totient is φ = 8891618100.

The previous prime is 8891618077. The next prime is 8891618143. The reversal of 8891618101 is 1018161988.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8728417476 + 163200625 = 93426^2 + 12775^2 .

It is a cyclic number.

It is not a de Polignac number, because 8891618101 - 2³³ = 301683509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8891618501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4445809050 + 4445809051.

It is an arithmetic number, because the mean of its divisors is an integer number (4445809051).

Almost surely, 2^8891618101 is an apocalyptic number.

It is an amenable number.

8891618101 is a deficient number, since it is larger than the sum of its proper divisors (1).

8891618101 is an equidigital number, since it uses as much as digits as its factorization.

8891618101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 43.

The square root of 8891618101 is about 94295.3768803116. The cubic root of 8891618101 is about 2071.7003230230.

The spelling of 8891618101 in words is "eight billion, eight hundred ninety-one million, six hundred eighteen thousand, one hundred one".