101818385 has 4 divisors (see below), whose sum is σ = 122182068. Its totient is φ = 81454704.

The previous prime is 101818373. The next prime is 101818411. The reversal of 101818385 is 583818101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13608721 + 88209664 = 3689^2 + 9392^2 .

It is a cyclic number.

It is not a de Polignac number, because 101818385 - 2⁴ = 101818369 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10181834 + ... + 10181843.

It is an arithmetic number, because the mean of its divisors is an integer number (30545517).

Almost surely, 2^101818385 is an apocalyptic number.

It is an amenable number.

101818385 is a deficient number, since it is larger than the sum of its proper divisors (20363683).

101818385 is an equidigital number, since it uses as much as digits as its factorization.

101818385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20363682.

The product of its (nonzero) digits is 7680, while the sum is 35.

The square root of 101818385 is about 10090.5096501614. The cubic root of 101818385 is about 466.9553992685.

The spelling of 101818385 in words is "one hundred one million, eight hundred eighteen thousand, three hundred eighty-five".