2686969509 has 32 divisors (see below), whose sum is σ = 4334161920. Its totient is φ = 1447975872.

The previous prime is 2686969499. The next prime is 2686969529. The reversal of 2686969509 is 9059696862.

It is not a de Polignac number, because 2686969509 - 2⁷ = 2686969381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686969529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25117 + ... + 77490.

It is an arithmetic number, because the mean of its divisors is an integer number (135442560).

Almost surely, 2^2686969509 is an apocalyptic number.

2686969509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2686969509 is a deficient number, since it is larger than the sum of its proper divisors (1647192411).

2686969509 is a wasteful number, since it uses less digits than its factorization.

2686969509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102689.

The product of its (nonzero) digits is 12597120, while the sum is 60.

The square root of 2686969509 is about 51835.9866212653. The cubic root of 2686969509 is about 1390.2329559698.

The spelling of 2686969509 in words is "two billion, six hundred eighty-six million, nine hundred sixty-nine thousand, five hundred nine".