6233138649 has 10 divisors (see below), whose sum is σ = 9311231930. Its totient is φ = 4155425712.

The previous prime is 6233138629. The next prime is 6233138657. The reversal of 6233138649 is 9468313326.

6233138649 is a `hidden beast` number, since 623 + 3 + 13 + 8 + 6 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3739934025 + 2493204624 = 61155^2 + 49932^2 .

It is not a de Polignac number, because 6233138649 - 2⁸ = 6233138393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6233138609) 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 in 9 ways as a sum of consecutive naturals, for example, 38476084 + ... + 38476245.

It is an arithmetic number, because the mean of its divisors is an integer number (931123193).

Almost surely, 2^6233138649 is an apocalyptic number.

It is an amenable number.

6233138649 is a deficient number, since it is larger than the sum of its proper divisors (3078093281).

6233138649 is an equidigital number, since it uses as much as digits as its factorization.

6233138649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76952341 (or 76952332 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 6233138649 is about 78950.2289357035. The cubic root of 6233138649 is about 1840.3577841783.

The spelling of 6233138649 in words is "six billion, two hundred thirty-three million, one hundred thirty-eight thousand, six hundred forty-nine".