4649045861 has 2 divisors, whose sum is σ = 4649045862. Its totient is φ = 4649045860.

The previous prime is 4649045839. The next prime is 4649045881. The reversal of 4649045861 is 1685409464.

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., 3374912836 + 1274133025 = 58094^2 + 35695^2 .

It is a cyclic number.

It is not a de Polignac number, because 4649045861 - 2¹⁴ = 4649029477 is a prime.

It is a super-2 number, since 2×4649045861² = 43227254835362462642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4649045881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2324522930 + 2324522931.

It is an arithmetic number, because the mean of its divisors is an integer number (2324522931).

Almost surely, 2^4649045861 is an apocalyptic number.

It is an amenable number.

4649045861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4649045861 is an equidigital number, since it uses as much as digits as its factorization.

4649045861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 4649045861 is about 68183.9120394247. The cubic root of 4649045861 is about 1668.9933648051.

The spelling of 4649045861 in words is "four billion, six hundred forty-nine million, forty-five thousand, eight hundred sixty-one".