6837474521 has 2 divisors, whose sum is σ = 6837474522. Its totient is φ = 6837474520.

The previous prime is 6837474503. The next prime is 6837474547. The reversal of 6837474521 is 1254747386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6045840025 + 791634496 = 77755^2 + 28136^2 .

It is a cyclic number.

It is not a de Polignac number, because 6837474521 - 2²² = 6833280217 is a prime.

It is not a weakly prime, because it can be changed into another prime (6837476521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3418737260 + 3418737261.

It is an arithmetic number, because the mean of its divisors is an integer number (3418737261).

Almost surely, 2^6837474521 is an apocalyptic number.

It is an amenable number.

6837474521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6837474521 is an equidigital number, since it uses as much as digits as its factorization.

6837474521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 47.

The square root of 6837474521 is about 82689.0229776601. The cubic root of 6837474521 is about 1898.0103383177.

The spelling of 6837474521 in words is "six billion, eight hundred thirty-seven million, four hundred seventy-four thousand, five hundred twenty-one".