7806764149 has 2 divisors, whose sum is σ = 7806764150. Its totient is φ = 7806764148.

The previous prime is 7806764113. The next prime is 7806764171. The reversal of 7806764149 is 9414676087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5901005124 + 1905759025 = 76818^2 + 43655^2 .

It is a cyclic number.

It is not a de Polignac number, because 7806764149 - 2¹⁷ = 7806633077 is a prime.

It is a super-2 number, since 2×7806764149² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7806764096 and 7806764105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7806762149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903382074 + 3903382075.

It is an arithmetic number, because the mean of its divisors is an integer number (3903382075).

Almost surely, 2^7806764149 is an apocalyptic number.

It is an amenable number.

7806764149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7806764149 is an equidigital number, since it uses as much as digits as its factorization.

7806764149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 7806764149 is about 88355.8948174936. The cubic root of 7806764149 is about 1983.7655909545.

The spelling of 7806764149 in words is "seven billion, eight hundred six million, seven hundred sixty-four thousand, one hundred forty-nine".