5123631649 has 16 divisors (see below), whose sum is σ = 5506944192. Its totient is φ = 4749954048.

The previous prime is 5123631631. The next prime is 5123631677. The reversal of 5123631649 is 9461363215.

It is a cyclic number.

It is not a de Polignac number, because 5123631649 - 2⁹ = 5123631137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123631619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304942 + ... + 321304.

It is an arithmetic number, because the mean of its divisors is an integer number (344184012).

Almost surely, 2^5123631649 is an apocalyptic number.

It is an amenable number.

5123631649 is a deficient number, since it is larger than the sum of its proper divisors (383312543).

5123631649 is a wasteful number, since it uses less digits than its factorization.

5123631649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16656.

The product of its digits is 116640, while the sum is 40.

The square root of 5123631649 is about 71579.5477004430. The cubic root of 5123631649 is about 1723.9551635572.

The spelling of 5123631649 in words is "five billion, one hundred twenty-three million, six hundred thirty-one thousand, six hundred forty-nine".