7127964538 has 4 divisors (see below), whose sum is σ = 10691946810. Its totient is φ = 3563982268.

The previous prime is 7127964479. The next prime is 7127964539. The reversal of 7127964538 is 8354697217.

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., 5206632649 + 1921331889 = 72157^2 + 43833^2 .

It is not an unprimeable number, because it can be changed into a prime (7127964539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1781991133 + ... + 1781991136.

Almost surely, 2^7127964538 is an apocalyptic number.

7127964538 is a deficient number, since it is larger than the sum of its proper divisors (3563982272).

7127964538 is a wasteful number, since it uses less digits than its factorization.

7127964538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563982271.

The product of its digits is 2540160, while the sum is 52.

The square root of 7127964538 is about 84427.2736620104. The cubic root of 7127964538 is about 1924.5174064775.

The spelling of 7127964538 in words is "seven billion, one hundred twenty-seven million, nine hundred sixty-four thousand, five hundred thirty-eight".