7628391314 has 4 divisors (see below), whose sum is σ = 11442586974. Its totient is φ = 3814195656.

The previous prime is 7628391313. The next prime is 7628391319. The reversal of 7628391314 is 4131938267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4131938267 = 503 ⋅8214589.

It can be written as a sum of positive squares in only one way, i.e., 6070747225 + 1557644089 = 77915^2 + 39467^2 .

It is not an unprimeable number, because it can be changed into a prime (7628391311) 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 as a sum of consecutive naturals, namely, 1907097827 + ... + 1907097830.

Almost surely, 2^7628391314 is an apocalyptic number.

7628391314 is a deficient number, since it is larger than the sum of its proper divisors (3814195660).

7628391314 is a wasteful number, since it uses less digits than its factorization.

7628391314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814195659.

The product of its digits is 217728, while the sum is 44.

The square root of 7628391314 is about 87340.6624316532. The cubic root of 7628391314 is about 1968.5403493504.

The spelling of 7628391314 in words is "seven billion, six hundred twenty-eight million, three hundred ninety-one thousand, three hundred fourteen".