7853663491 has 8 divisors (see below), whose sum is σ = 8119159664. Its totient is φ = 7591933440.

The previous prime is 7853663483. The next prime is 7853663533. The reversal of 7853663491 is 1943663587.

It is a happy number.

7853663491 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 7853663491 - 2³ = 7853663483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7853663291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937290 + ... + 945631.

It is an arithmetic number, because the mean of its divisors is an integer number (1014894958).

Almost surely, 2^7853663491 is an apocalyptic number.

7853663491 is a deficient number, since it is larger than the sum of its proper divisors (265496173).

7853663491 is a wasteful number, since it uses less digits than its factorization.

7853663491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883061.

The product of its digits is 3265920, while the sum is 52.

The square root of 7853663491 is about 88620.8975975757. The cubic root of 7853663491 is about 1987.7301704925.

The spelling of 7853663491 in words is "seven billion, eight hundred fifty-three million, six hundred sixty-three thousand, four hundred ninety-one".