9690251909 has 16 divisors (see below), whose sum is σ = 10584000000. Its totient is φ = 8818159296.

The previous prime is 9690251849. The next prime is 9690251911. The reversal of 9690251909 is 9091520969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9690251909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9690251939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507467 + ... + 526215.

It is an arithmetic number, because the mean of its divisors is an integer number (661500000).

Almost surely, 2^9690251909 is an apocalyptic number.

It is an amenable number.

9690251909 is a deficient number, since it is larger than the sum of its proper divisors (893748091).

9690251909 is a wasteful number, since it uses less digits than its factorization.

9690251909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19324.

The product of its (nonzero) digits is 393660, while the sum is 50.

The square root of 9690251909 is about 98439.0771441911. The cubic root of 9690251909 is about 2131.9565811640.

The spelling of 9690251909 in words is "nine billion, six hundred ninety million, two hundred fifty-one thousand, nine hundred nine".