6091861638 has 16 divisors (see below), whose sum is σ = 12184773696. Its totient is φ = 2030445480.

The previous prime is 6091861621. The next prime is 6091861639. The reversal of 6091861638 is 8361681906.

It is a super-2 number, since 2×6091861638² = 74221556433072086088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6091861639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45693 + ... + 119463.

It is an arithmetic number, because the mean of its divisors is an integer number (761548356).

Almost surely, 2^6091861638 is an apocalyptic number.

6091861638 is an abundant number, since it is smaller than the sum of its proper divisors (6092912058).

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

6091861638 is a wasteful number, since it uses less digits than its factorization.

6091861638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87539.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 6091861638 is about 78050.3788459736. The cubic root of 6091861638 is about 1826.3472019702.

The spelling of 6091861638 in words is "six billion, ninety-one million, eight hundred sixty-one thousand, six hundred thirty-eight".