1906365 has 16 divisors (see below), whose sum is σ = 3211200. Its totient is φ = 963072.

The previous prime is 1906361. The next prime is 1906379. The reversal of 1906365 is 5636091.

It is a happy number.

It is not a de Polignac number, because 1906365 - 2² = 1906361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3060 + ... + 3629.

It is an arithmetic number, because the mean of its divisors is an integer number (200700).

2^1906365 is an apocalyptic number.

1906365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1906365 is a deficient number, since it is larger than the sum of its proper divisors (1304835).

1906365 is a wasteful number, since it uses less digits than its factorization.

1906365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 1906365 is about 1380.7117729635. The cubic root of 1906365 is about 123.9943849348.

It can be divided in two parts, 190 and 6365, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 1906365 in words is "one million, nine hundred six thousand, three hundred sixty-five".