7630785389 has 4 divisors (see below), whose sum is σ = 7636393500. Its totient is φ = 7625177280.

The previous prime is 7630785367. The next prime is 7630785433. The reversal of 7630785389 is 9835870367.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9835870367 = 7177 ⋅1370471.

It can be written as a sum of positive squares in 2 ways, for example, as 2877786025 + 4752999364 = 53645^2 + 68942^2 .

It is a cyclic number.

It is not a de Polignac number, because 7630785389 - 2⁸ = 7630785133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7630785319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2802014 + ... + 2804735.

It is an arithmetic number, because the mean of its divisors is an integer number (1909098375).

Almost surely, 2^7630785389 is an apocalyptic number.

It is an amenable number.

7630785389 is a deficient number, since it is larger than the sum of its proper divisors (5608111).

7630785389 is a wasteful number, since it uses less digits than its factorization.

7630785389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608110.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The square root of 7630785389 is about 87354.3667425962. The cubic root of 7630785389 is about 1968.7462617159.

The spelling of 7630785389 in words is "seven billion, six hundred thirty million, seven hundred eighty-five thousand, three hundred eighty-nine".