7818049 has 2 divisors, whose sum is σ = 7818050. Its totient is φ = 7818048.

The previous prime is 7818037. The next prime is 7818053. The reversal of 7818049 is 9408187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 283024 = 2745^2 + 532^2 .

It is an emirp because it is prime and its reverse (9408187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7818049 - 2¹¹ = 7816001 is a prime.

It is a super-2 number, since 2×7818049² = 122243780332802, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7817999 and 7818017.

It is not a weakly prime, because it can be changed into another prime (7818649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3909024 + 3909025.

It is an arithmetic number, because the mean of its divisors is an integer number (3909025).

Almost surely, 2^7818049 is an apocalyptic number.

It is an amenable number.

7818049 is a deficient number, since it is larger than the sum of its proper divisors (1).

7818049 is an equidigital number, since it uses as much as digits as its factorization.

7818049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 7818049 is about 2796.0774309736. The cubic root of 7818049 is about 198.4720989829.

The spelling of 7818049 in words is "seven million, eight hundred eighteen thousand, forty-nine".