5491109694 has 16 divisors (see below), whose sum is σ = 12551107968. Its totient is φ = 1568888472.

The previous prime is 5491109627. The next prime is 5491109699. The reversal of 5491109694 is 4969011945.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491109699) 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, 65370312 + ... + 65370395.

It is an arithmetic number, because the mean of its divisors is an integer number (784444248).

Almost surely, 2^5491109694 is an apocalyptic number.

5491109694 is an abundant number, since it is smaller than the sum of its proper divisors (7059998274).

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

5491109694 is a wasteful number, since it uses less digits than its factorization.

5491109694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130740719.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 5491109694 is about 74102.0221991276. The cubic root of 5491109694 is about 1764.2225675690. Note that the first 3 decimals are identical.

The spelling of 5491109694 in words is "five billion, four hundred ninety-one million, one hundred nine thousand, six hundred ninety-four".