101819906 has 8 divisors (see below), whose sum is σ = 153667344. Its totient is φ = 50597460.

The previous prime is 101819897. The next prime is 101819909. The reversal of 101819906 is 609918101.

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

It is not an unprimeable number, because it can be changed into a prime (101819909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155840 + ... + 156491.

It is an arithmetic number, because the mean of its divisors is an integer number (19208418).

Almost surely, 2^101819906 is an apocalyptic number.

101819906 is a deficient number, since it is larger than the sum of its proper divisors (51847438).

101819906 is a wasteful number, since it uses less digits than its factorization.

101819906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312496.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 101819906 is about 10090.5850177282. The cubic root of 101819906 is about 466.9577244400.

The spelling of 101819906 in words is "one hundred one million, eight hundred nineteen thousand, nine hundred six".