6542881348 has 6 divisors (see below), whose sum is σ = 11450042366. Its totient is φ = 3271440672.

The previous prime is 6542881343. The next prime is 6542881379. The reversal of 6542881348 is 8431882456.

It can be written as a sum of positive squares in only one way, i.e., 4076567104 + 2466314244 = 63848^2 + 49662^2 .

It is not an unprimeable number, because it can be changed into a prime (6542881343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817860165 + ... + 817860172.

Almost surely, 2^6542881348 is an apocalyptic number.

It is an amenable number.

6542881348 is a deficient number, since it is larger than the sum of its proper divisors (4907161018).

6542881348 is a wasteful number, since it uses less digits than its factorization.

6542881348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635720341 (or 1635720339 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The square root of 6542881348 is about 80888.0791464354. The cubic root of 6542881348 is about 1870.3505636913.

The spelling of 6542881348 in words is "six billion, five hundred forty-two million, eight hundred eighty-one thousand, three hundred forty-eight".