1953009 has 6 divisors (see below), whose sum is σ = 2821026. Its totient is φ = 1302000.

The previous prime is 1953001. The next prime is 1953013. The reversal of 1953009 is 9003591.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 680625 = 1128^2 + 825^2 .

It is not a de Polignac number, because 1953009 - 2³ = 1953001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1953001) 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 5 ways as a sum of consecutive naturals, for example, 108492 + ... + 108509.

It is an arithmetic number, because the mean of its divisors is an integer number (470171).

2^1953009 is an apocalyptic number.

It is an amenable number.

1953009 is a deficient number, since it is larger than the sum of its proper divisors (868017).

1953009 is a wasteful number, since it uses less digits than its factorization.

1953009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217007 (or 217004 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 1953009 is about 1397.5009838995. The cubic root of 1953009 is about 124.9975252843.

The spelling of 1953009 in words is "one million, nine hundred fifty-three thousand, nine".