101818117 has 8 divisors (see below), whose sum is σ = 110721816. Its totient is φ = 93238272.

The previous prime is 101818103. The next prime is 101818139. The reversal of 101818117 is 711818101.

It can be written as a sum of positive squares in 4 ways, for example, as 27185796 + 74632321 = 5214^2 + 8639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101818117 - 2¹⁵ = 101785349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101818177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80308 + ... + 81565.

It is an arithmetic number, because the mean of its divisors is an integer number (13840227).

Almost surely, 2^101818117 is an apocalyptic number.

101818117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

101818117 is a deficient number, since it is larger than the sum of its proper divisors (8903699).

101818117 is a wasteful number, since it uses less digits than its factorization.

101818117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161927.

The product of its (nonzero) digits is 448, while the sum is 28.

The square root of 101818117 is about 10090.4963703477. The cubic root of 101818117 is about 466.9549895712.

The spelling of 101818117 in words is "one hundred one million, eight hundred eighteen thousand, one hundred seventeen".