1906345 has 24 divisors (see below), whose sum is σ = 2757888. Its totient is φ = 1260000.

The previous prime is 1906343. The next prime is 1906361. The reversal of 1906345 is 5436091.

1906345 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 1906345 - 2¹ = 1906343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1906343) 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 23 ways as a sum of consecutive naturals, for example, 7470 + ... + 7720.

It is an arithmetic number, because the mean of its divisors is an integer number (114912).

2^1906345 is an apocalyptic number.

It is an amenable number.

1906345 is a deficient number, since it is larger than the sum of its proper divisors (851543).

1906345 is a wasteful number, since it uses less digits than its factorization.

1906345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1906345 is about 1380.7045303033. The cubic root of 1906345 is about 123.9939513179.

The spelling of 1906345 in words is "one million, nine hundred six thousand, three hundred forty-five".