9201138657 has 8 divisors (see below), whose sum is σ = 12269986176. Its totient is φ = 6133191792.

The previous prime is 9201138649. The next prime is 9201138671. The reversal of 9201138657 is 7568311029.

9201138657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9201138657 - 2³ = 9201138649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9201133657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200953 + ... + 242454.

It is an arithmetic number, because the mean of its divisors is an integer number (1533748272).

Almost surely, 2^9201138657 is an apocalyptic number.

It is an amenable number.

9201138657 is a deficient number, since it is larger than the sum of its proper divisors (3068847519).

9201138657 is a wasteful number, since it uses less digits than its factorization.

9201138657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450327.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 9201138657 is about 95922.5659425351. The cubic root of 9201138657 is about 2095.4655490846.

The spelling of 9201138657 in words is "nine billion, two hundred one million, one hundred thirty-eight thousand, six hundred fifty-seven".