3721004491 has 2 divisors, whose sum is σ = 3721004492. Its totient is φ = 3721004490.

The previous prime is 3721004473. The next prime is 3721004503. The reversal of 3721004491 is 1944001273.

It is a strong prime.

It is an emirp because it is prime and its reverse (1944001273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3721004491 - 2¹¹ = 3721002443 is a prime.

It is not a weakly prime, because it can be changed into another prime (3721004401) 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, 1860502245 + 1860502246.

It is an arithmetic number, because the mean of its divisors is an integer number (1860502246).

Almost surely, 2^3721004491 is an apocalyptic number.

3721004491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721004491 is an equidigital number, since it uses as much as digits as its factorization.

3721004491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3721004491 is about 61000.0368114643. The cubic root of 3721004491 is about 1549.6016306787.

The spelling of 3721004491 in words is "three billion, seven hundred twenty-one million, four thousand, four hundred ninety-one".