7228914538 has 4 divisors (see below), whose sum is σ = 10843371810. Its totient is φ = 3614457268.

The previous prime is 7228914533. The next prime is 7228914541. The reversal of 7228914538 is 8354198227.

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

It can be written as a sum of positive squares in only one way, i.e., 6916084569 + 312829969 = 83163^2 + 17687^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7228914491 and 7228914500.

It is not an unprimeable number, because it can be changed into a prime (7228914533) 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 as a sum of consecutive naturals, namely, 1807228633 + ... + 1807228636.

Almost surely, 2^7228914538 is an apocalyptic number.

7228914538 is a deficient number, since it is larger than the sum of its proper divisors (3614457272).

7228914538 is a wasteful number, since it uses less digits than its factorization.

7228914538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614457271.

The product of its digits is 967680, while the sum is 49.

The square root of 7228914538 is about 85023.0235759703. The cubic root of 7228914538 is about 1933.5601944316.

The spelling of 7228914538 in words is "seven billion, two hundred twenty-eight million, nine hundred fourteen thousand, five hundred thirty-eight".