6091911618 has 96 divisors (see below), whose sum is σ = 13771654848. Its totient is φ = 1785421440.

The previous prime is 6091911611. The next prime is 6091911641. The reversal of 6091911618 is 8161191906.

It is a happy number.

It is a super-2 number, since 2×6091911618² = 74222774323046755848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6091911618.

It is not an unprimeable number, because it can be changed into a prime (6091911611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5021580 + ... + 5022792.

It is an arithmetic number, because the mean of its divisors is an integer number (143454738).

Almost surely, 2^6091911618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6091911618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6885827424).

6091911618 is an abundant number, since it is smaller than the sum of its proper divisors (7679743230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6091911618 is a wasteful number, since it uses less digits than its factorization.

6091911618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 6091911618 is about 78050.6990231350. The cubic root of 6091911618 is about 1826.3521966440.

The spelling of 6091911618 in words is "six billion, ninety-one million, nine hundred eleven thousand, six hundred eighteen".