628218937307 has 4 divisors (see below), whose sum is σ = 676543470960. Its totient is φ = 579894403656.

The previous prime is 628218937277. The next prime is 628218937319. The reversal of 628218937307 is 703739812826.

628218937307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628218937307 - 2²⁰ = 628217888731 is a prime.

It is a super-2 number, since 2×628218937307² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628218937327) 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, 24162266807 + ... + 24162266832.

It is an arithmetic number, because the mean of its divisors is an integer number (169135867740).

Almost surely, 2^628218937307 is an apocalyptic number.

628218937307 is a deficient number, since it is larger than the sum of its proper divisors (48324533653).

628218937307 is a wasteful number, since it uses less digits than its factorization.

628218937307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48324533652.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 628218937307 in words is "six hundred twenty-eight billion, two hundred eighteen million, nine hundred thirty-seven thousand, three hundred seven".