3764830021 has 2 divisors, whose sum is σ = 3764830022. Its totient is φ = 3764830020.

The previous prime is 3764830019. The next prime is 3764830033. The reversal of 3764830021 is 1200384673.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2903700996 + 861129025 = 53886^2 + 29345^2 .

It is a cyclic number.

It is not a de Polignac number, because 3764830021 - 2¹ = 3764830019 is a prime.

Together with 3764830019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3764830001) 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, 1882415010 + 1882415011.

It is an arithmetic number, because the mean of its divisors is an integer number (1882415011).

Almost surely, 2^3764830021 is an apocalyptic number.

It is an amenable number.

3764830021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3764830021 is an equidigital number, since it uses as much as digits as its factorization.

3764830021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 3764830021 is about 61358.2107056586. The cubic root of 3764830021 is about 1555.6615735205.

The spelling of 3764830021 in words is "three billion, seven hundred sixty-four million, eight hundred thirty thousand, twenty-one".