9725744136 has 32 divisors (see below), whose sum is σ = 24587560800. Its totient is φ = 3205488000.

The previous prime is 9725744129. The next prime is 9725744141. The reversal of 9725744136 is 6314475279.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274490 + ... + 2278761.

It is an arithmetic number, because the mean of its divisors is an integer number (768361275).

Almost surely, 2^9725744136 is an apocalyptic number.

It is an amenable number.

9725744136 is an abundant number, since it is smaller than the sum of its proper divisors (14861816664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9725744136 is a wasteful number, since it uses less digits than its factorization.

9725744136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553349 (or 4553345 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 9725744136 is about 98619.1874636980. The cubic root of 9725744136 is about 2134.5562965933.

The spelling of 9725744136 in words is "nine billion, seven hundred twenty-five million, seven hundred forty-four thousand, one hundred thirty-six".