1239106653 has 30 divisors (see below), whose sum is σ = 1903999614. Its totient is φ = 802494864.

The previous prime is 1239106651. The next prime is 1239106657. The reversal of 1239106653 is 3566019321.

It can be written as a sum of positive squares in only one way, i.e., 1205617284 + 33489369 = 34722^2 + 5787^2 .

It is not a de Polignac number, because 1239106653 - 2¹ = 1239106651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239106651) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1926750 + ... + 1927392.

Almost surely, 2^1239106653 is an apocalyptic number.

It is an amenable number.

1239106653 is a deficient number, since it is larger than the sum of its proper divisors (664892961).

1239106653 is an frugal number, since it uses more digits than its factorization.

1239106653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1239106653 is about 35200.9467628358. The cubic root of 1239106653 is about 1074.0790101357.

The spelling of 1239106653 in words is "one billion, two hundred thirty-nine million, one hundred six thousand, six hundred fifty-three".