1909061 has 8 divisors (see below), whose sum is σ = 2380224. Its totient is φ = 1487520.

The previous prime is 1909051. The next prime is 1909079. The reversal of 1909061 is 1609091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1909061 - 2⁶ = 1908997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1909061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1909021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12320 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (297528).

2^1909061 is an apocalyptic number.

1909061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1909061 is a deficient number, since it is larger than the sum of its proper divisors (471163).

1909061 is a wasteful number, since it uses less digits than its factorization.

1909061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24811.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1909061 is about 1381.6877360677. The cubic root of 1909061 is about 124.0528087589.

The spelling of 1909061 in words is "one million, nine hundred nine thousand, sixty-one".