9118708457 has 4 divisors (see below), whose sum is σ = 9118903380. Its totient is φ = 9118513536.

The previous prime is 9118708453. The next prime is 9118708471. The reversal of 9118708457 is 7548078119.

9118708457 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: 7548078119 = 349 ⋅21627731.

It can be written as a sum of positive squares in 2 ways, for example, as 3375493801 + 5743214656 = 58099^2 + 75784^2 .

It is a cyclic number.

It is not a de Polignac number, because 9118708457 - 2² = 9118708453 is a prime.

It is a deceptive number, since it divides R_9118708456.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9118708453) 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, 19493 + ... + 136445.

It is an arithmetic number, because the mean of its divisors is an integer number (2279725845).

Almost surely, 2^9118708457 is an apocalyptic number.

9118708457 is the 77969-th pentagonal number.

It is an amenable number.

9118708457 is a deficient number, since it is larger than the sum of its proper divisors (194923).

9118708457 is a wasteful number, since it uses less digits than its factorization.

9118708457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194922.

The product of its (nonzero) digits is 564480, while the sum is 50.

The square root of 9118708457 is about 95491.9287531674. The cubic root of 9118708457 is about 2089.1892230711.

The spelling of 9118708457 in words is "nine billion, one hundred eighteen million, seven hundred eight thousand, four hundred fifty-seven".