1926945 has 12 divisors (see below), whose sum is σ = 3340116. Its totient is φ = 1027680.

The previous prime is 1926937. The next prime is 1926949. The reversal of 1926945 is 5496291.

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 1595169 = 576^2 + 1263^2 .

It is not a de Polignac number, because 1926945 - 2³ = 1926937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1926949) 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 11 ways as a sum of consecutive naturals, for example, 21366 + ... + 21455.

It is an arithmetic number, because the mean of its divisors is an integer number (278343).

2^1926945 is an apocalyptic number.

1926945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1926945 is a deficient number, since it is larger than the sum of its proper divisors (1413171).

1926945 is a wasteful number, since it uses less digits than its factorization.

1926945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42832 (or 42829 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 1926945 is about 1388.1444449336. The cubic root of 1926945 is about 124.4389791451.

The spelling of 1926945 in words is "one million, nine hundred twenty-six thousand, nine hundred forty-five".