1926561 has 16 divisors (see below), whose sum is σ = 3161984. Its totient is φ = 1016064.

The previous prime is 1926541. The next prime is 1926569. The reversal of 1926561 is 1656291.

It is not a de Polignac number, because 1926561 - 2¹¹ = 1924513 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1926569) 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 15 ways as a sum of consecutive naturals, for example, 3256 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (197624).

2^1926561 is an apocalyptic number.

It is an amenable number.

1926561 is a deficient number, since it is larger than the sum of its proper divisors (1235423).

1926561 is a wasteful number, since it uses less digits than its factorization.

1926561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080.

The product of its digits is 3240, while the sum is 30.

The square root of 1926561 is about 1388.0061239058. The cubic root of 1926561 is about 124.4307125638.

It can be divided in two parts, 192 and 6561, that multiplied together give a cube (1259712 = 108³).

The spelling of 1926561 in words is "one million, nine hundred twenty-six thousand, five hundred sixty-one".