9157209101 has 4 divisors (see below), whose sum is σ = 9160359900. Its totient is φ = 9154058304.

The previous prime is 9157209097. The next prime is 9157209107. The reversal of 9157209101 is 1019027519.

9157209101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1019027519 = 877 ⋅1161947.

It can be written as a sum of positive squares in 2 ways, for example, as 8473386601 + 683822500 = 92051^2 + 26150^2 .

It is a cyclic number.

It is not a de Polignac number, because 9157209101 - 2² = 9157209097 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 (9157209107) 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 3 ways as a sum of consecutive naturals, for example, 1571036 + ... + 1576853.

It is an arithmetic number, because the mean of its divisors is an integer number (2290089975).

Almost surely, 2^9157209101 is an apocalyptic number.

It is an amenable number.

9157209101 is a deficient number, since it is larger than the sum of its proper divisors (3150799).

9157209101 is a wasteful number, since it uses less digits than its factorization.

9157209101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150798.

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 9157209101 is about 95693.3075037121. The cubic root of 9157209101 is about 2092.1253915124.

The spelling of 9157209101 in words is "nine billion, one hundred fifty-seven million, two hundred nine thousand, one hundred one".