9814742491 has 4 divisors (see below), whose sum is σ = 9814972752. Its totient is φ = 9814512232.

The previous prime is 9814742423. The next prime is 9814742501. The reversal of 9814742491 is 1942474189.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1942474189 = 733 ⋅2650033.

It is a cyclic number.

It is not a de Polignac number, because 9814742491 - 2¹¹ = 9814740443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9814742411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30415 + ... + 143368.

It is an arithmetic number, because the mean of its divisors is an integer number (2453743188).

Almost surely, 2^9814742491 is an apocalyptic number.

9814742491 is a deficient number, since it is larger than the sum of its proper divisors (230261).

9814742491 is a wasteful number, since it uses less digits than its factorization.

9814742491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230260.

The product of its digits is 580608, while the sum is 49.

The square root of 9814742491 is about 99069.3822076226. The cubic root of 9814742491 is about 2141.0475038150.

The spelling of 9814742491 in words is "nine billion, eight hundred fourteen million, seven hundred forty-two thousand, four hundred ninety-one".