106198919 has 4 divisors (see below), whose sum is σ = 106963080. Its totient is φ = 105434760.

The previous prime is 106198913. The next prime is 106198921. The reversal of 106198919 is 919891601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919891601 = 23 ⋅39995287.

It is a cyclic number.

It is not a de Polignac number, because 106198919 - 2⁸ = 106198663 is a prime.

It is a super-2 number, since 2×106198919² = 22556420793537122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106198919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106198913) 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, 381872 + ... + 382149.

It is an arithmetic number, because the mean of its divisors is an integer number (26740770).

Almost surely, 2^106198919 is an apocalyptic number.

106198919 is a deficient number, since it is larger than the sum of its proper divisors (764161).

106198919 is an equidigital number, since it uses as much as digits as its factorization.

106198919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764160.

The product of its (nonzero) digits is 34992, while the sum is 44.

The square root of 106198919 is about 10305.2859737127. The cubic root of 106198919 is about 473.5582046084.

The spelling of 106198919 in words is "one hundred six million, one hundred ninety-eight thousand, nine hundred nineteen".