3730842908521 has 3 divisors (see below), whose sum is σ = 3730844840061. Its totient is φ = 3730840976982.

The previous prime is 3730842908491. The next prime is 3730842908557. The reversal of 3730842908521 is 1258092480373.

It is a happy number.

The square root of 3730842908521 is 1931539.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3730842908521 - 2⁵ = 3730842908489 is a prime.

It is a super-2 number, since 2×3730842908521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3730842908621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 965770 + ... + 2897308.

It is an arithmetic number, because the mean of its divisors is an integer number (1243614946687).

Almost surely, 2^{3730842908521} is an apocalyptic number.

3730842908521 is the 1931539-th square number.

3730842908521 is the 965770-th centered octagonal number.

It is an amenable number.

3730842908521 is a deficient number, since it is larger than the sum of its proper divisors (1931540).

3730842908521 is an frugal number, since it uses more digits than its factorization.

3730842908521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863078 (or 1931539 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 3730842908521 in words is "three trillion, seven hundred thirty billion, eight hundred forty-two million, nine hundred eight thousand, five hundred twenty-one".