19106445 has 16 divisors (see below), whose sum is σ = 31900032. Its totient is φ = 9746880.

The previous prime is 19106441. The next prime is 19106489. The reversal of 19106445 is 54460191.

It is a happy number.

It is not a de Polignac number, because 19106445 - 2² = 19106441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19106441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27346 + ... + 28035.

It is an arithmetic number, because the mean of its divisors is an integer number (1993752).

Almost surely, 2^19106445 is an apocalyptic number.

19106445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19106445 is a deficient number, since it is larger than the sum of its proper divisors (12793587).

19106445 is a wasteful number, since it uses less digits than its factorization.

19106445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55412.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 19106445 is about 4371.0919688334. The cubic root of 19106445 is about 267.3375494858.

The spelling of 19106445 in words is "nineteen million, one hundred six thousand, four hundred forty-five".