6166103381 has 2 divisors, whose sum is σ = 6166103382. Its totient is φ = 6166103380.

The previous prime is 6166103357. The next prime is 6166103387. The reversal of 6166103381 is 1833016616.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5466236356 + 699867025 = 73934^2 + 26455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6166103381 is a prime.

It is a super-2 number, since 2×6166103381² = 76041661810359262322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6166103387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3083051690 + 3083051691.

It is an arithmetic number, because the mean of its divisors is an integer number (3083051691).

Almost surely, 2^6166103381 is an apocalyptic number.

It is an amenable number.

6166103381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6166103381 is an equidigital number, since it uses as much as digits as its factorization.

6166103381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6166103381 is about 78524.5399922852. The cubic root of 6166103381 is about 1833.7365184402.

Adding to 6166103381 its reverse (1833016616), we get a palindrome (7999119997).

The spelling of 6166103381 in words is "six billion, one hundred sixty-six million, one hundred three thousand, three hundred eighty-one".