1209910653 has 48 divisors (see below), whose sum is σ = 2156094720. Its totient is φ = 638491392.

The previous prime is 1209910579. The next prime is 1209910657. The reversal of 1209910653 is 3560199021.

It is not a de Polignac number, because 1209910653 - 2¹⁰ = 1209909629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209910657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27625 + ... + 56417.

It is an arithmetic number, because the mean of its divisors is an integer number (44918640).

Almost surely, 2^1209910653 is an apocalyptic number.

It is an amenable number.

1209910653 is a deficient number, since it is larger than the sum of its proper divisors (946184067).

1209910653 is a wasteful number, since it uses less digits than its factorization.

1209910653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28858 (or 28855 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1209910653 is about 34783.7699653157. The cubic root of 1209910653 is about 1065.5760079218.

The spelling of 1209910653 in words is "one billion, two hundred nine million, nine hundred ten thousand, six hundred fifty-three".