6181654889 has 2 divisors, whose sum is σ = 6181654890. Its totient is φ = 6181654888.

The previous prime is 6181654847. The next prime is 6181654939. The reversal of 6181654889 is 9884561816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3518269225 + 2663385664 = 59315^2 + 51608^2 .

It is a cyclic number.

It is not a de Polignac number, because 6181654889 - 2¹² = 6181650793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6181654289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3090827444 + 3090827445.

It is an arithmetic number, because the mean of its divisors is an integer number (3090827445).

Almost surely, 2^6181654889 is an apocalyptic number.

It is an amenable number.

6181654889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6181654889 is an equidigital number, since it uses as much as digits as its factorization.

6181654889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 56.

The square root of 6181654889 is about 78623.5008696509. The cubic root of 6181654889 is about 1835.2768443907.

The spelling of 6181654889 in words is "six billion, one hundred eighty-one million, six hundred fifty-four thousand, eight hundred eighty-nine".