19106345 has 4 divisors (see below), whose sum is σ = 22927620. Its totient is φ = 15285072.

The previous prime is 19106327. The next prime is 19106357. The reversal of 19106345 is 54360191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54360191 = 127 ⋅428033.

It can be written as a sum of positive squares in 2 ways, for example, as 14160169 + 4946176 = 3763^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 19106345 - 2⁸ = 19106089 is a prime.

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, 1910630 + ... + 1910639.

It is an arithmetic number, because the mean of its divisors is an integer number (5731905).

Almost surely, 2^19106345 is an apocalyptic number.

It is an amenable number.

19106345 is a deficient number, since it is larger than the sum of its proper divisors (3821275).

19106345 is an equidigital number, since it uses as much as digits as its factorization.

19106345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821274.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 19106345 is about 4371.0805300292. The cubic root of 19106345 is about 267.3370830847.

The spelling of 19106345 in words is "nineteen million, one hundred six thousand, three hundred forty-five".