2738730521 has 2 divisors, whose sum is σ = 2738730522. Its totient is φ = 2738730520.

The previous prime is 2738730503. The next prime is 2738730541. The reversal of 2738730521 is 1250378372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2147024896 + 591705625 = 46336^2 + 24325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2738730521 - 2¹⁸ = 2738468377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2738730541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369365260 + 1369365261.

It is an arithmetic number, because the mean of its divisors is an integer number (1369365261).

Almost surely, 2^2738730521 is an apocalyptic number.

It is an amenable number.

2738730521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2738730521 is an equidigital number, since it uses as much as digits as its factorization.

2738730521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2738730521 is about 52332.8818335088. The cubic root of 2738730521 is about 1399.1032558317.

The spelling of 2738730521 in words is "two billion, seven hundred thirty-eight million, seven hundred thirty thousand, five hundred twenty-one".