9619493491 has 6 divisors (see below), whose sum is σ = 9684509492. Its totient is φ = 9554911080.

The previous prime is 9619493483. The next prime is 9619493501. The reversal of 9619493491 is 1943949169.

It is not a de Polignac number, because 9619493491 - 2³ = 9619493483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9619493441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194445 + ... + 238846.

Almost surely, 2^9619493491 is an apocalyptic number.

9619493491 is a deficient number, since it is larger than the sum of its proper divisors (65016001).

9619493491 is an equidigital number, since it uses as much as digits as its factorization.

9619493491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433589 (or 433440 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 55.

The square root of 9619493491 is about 98079.0165682752. The cubic root of 9619493491 is about 2126.7547022542.

The spelling of 9619493491 in words is "nine billion, six hundred nineteen million, four hundred ninety-three thousand, four hundred ninety-one".