7621828049 has 4 divisors (see below), whose sum is σ = 8314721520. Its totient is φ = 6928934580.

The previous prime is 7621828037. The next prime is 7621828079. The reversal of 7621828049 is 9408281267.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7621828049 - 2⁸ = 7621827793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7621827994 and 7621828012.

It is not an unprimeable number, because it can be changed into a prime (7621828079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346446719 + ... + 346446740.

It is an arithmetic number, because the mean of its divisors is an integer number (2078680380).

Almost surely, 2^7621828049 is an apocalyptic number.

It is an amenable number.

7621828049 is a deficient number, since it is larger than the sum of its proper divisors (692893471).

7621828049 is a wasteful number, since it uses less digits than its factorization.

7621828049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692893470.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 7621828049 is about 87303.0815550058. The cubic root of 7621828049 is about 1967.9756274419.

The spelling of 7621828049 in words is "seven billion, six hundred twenty-one million, eight hundred twenty-eight thousand, forty-nine".