7879181 has 2 divisors, whose sum is σ = 7879182. Its totient is φ = 7879180.

The previous prime is 7879169. The next prime is 7879199. The reversal of 7879181 is 1819787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4515625 + 3363556 = 2125^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 7879181 - 2¹⁴ = 7862797 is a prime.

It is a super-2 number, since 2×7879181² = 124162986461522, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7879481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939590 + 3939591.

It is an arithmetic number, because the mean of its divisors is an integer number (3939591).

Almost surely, 2^7879181 is an apocalyptic number.

It is an amenable number.

7879181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879181 is an equidigital number, since it uses as much as digits as its factorization.

7879181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 41.

The square root of 7879181 is about 2806.9878873982. The cubic root of 7879181 is about 198.9880635585.

The spelling of 7879181 in words is "seven million, eight hundred seventy-nine thousand, one hundred eighty-one".