1906049 has 4 divisors (see below), whose sum is σ = 1952580. Its totient is φ = 1859520.

The previous prime is 1906043. The next prime is 1906063. The reversal of 1906049 is 9406091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 1537600 = 607^2 + 1240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1906043) 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, 23204 + ... + 23285.

It is an arithmetic number, because the mean of its divisors is an integer number (488145).

2^1906049 is an apocalyptic number.

It is an amenable number.

1906049 is a deficient number, since it is larger than the sum of its proper divisors (46531).

1906049 is an equidigital number, since it uses as much as digits as its factorization.

1906049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46530.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1906049 is about 1380.5973344897. The cubic root of 1906049 is about 123.9875334328.

The spelling of 1906049 in words is "one million, nine hundred six thousand, forty-nine".