1041936821 has 2 divisors, whose sum is σ = 1041936822. Its totient is φ = 1041936820.

The previous prime is 1041936809. The next prime is 1041936871. The reversal of 1041936821 is 1286391401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978813796 + 63123025 = 31286^2 + 7945^2 .

It is an emirp because it is prime and its reverse (1286391401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1041936821 - 2⁶ = 1041936757 is a prime.

It is a super-3 number, since 3×1041936821³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1041936871) 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, 520968410 + 520968411.

It is an arithmetic number, because the mean of its divisors is an integer number (520968411).

Almost surely, 2^1041936821 is an apocalyptic number.

It is an amenable number.

1041936821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041936821 is an equidigital number, since it uses as much as digits as its factorization.

1041936821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1041936821 is about 32279.0461600091. The cubic root of 1041936821 is about 1013.7879587928.

The spelling of 1041936821 in words is "one billion, forty-one million, nine hundred thirty-six thousand, eight hundred twenty-one".