1146685021 has 2 divisors, whose sum is σ = 1146685022. Its totient is φ = 1146685020.

The previous prime is 1146685013. The next prime is 1146685063. The reversal of 1146685021 is 1205866411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635292025 + 511392996 = 25205^2 + 22614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146685021 - 2³ = 1146685013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146688021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573342510 + 573342511.

It is an arithmetic number, because the mean of its divisors is an integer number (573342511).

Almost surely, 2^1146685021 is an apocalyptic number.

It is an amenable number.

1146685021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146685021 is an equidigital number, since it uses as much as digits as its factorization.

1146685021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1146685021 is about 33862.7379430548. The cubic root of 1146685021 is about 1046.6818977030.

The spelling of 1146685021 in words is "one billion, one hundred forty-six million, six hundred eighty-five thousand, twenty-one".