2086469621 has 2 divisors, whose sum is σ = 2086469622. Its totient is φ = 2086469620.

The previous prime is 2086469617. The next prime is 2086469659. The reversal of 2086469621 is 1269646802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168682596 + 917787025 = 34186^2 + 30295^2 .

It is a cyclic number.

It is not a de Polignac number, because 2086469621 - 2² = 2086469617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2086469611) 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 as a sum of consecutive naturals, namely, 1043234810 + 1043234811.

It is an arithmetic number, because the mean of its divisors is an integer number (1043234811).

Almost surely, 2^2086469621 is an apocalyptic number.

It is an amenable number.

2086469621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086469621 is an equidigital number, since it uses as much as digits as its factorization.

2086469621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 2086469621 is about 45677.8898483719. The cubic root of 2086469621 is about 1277.8229638040.

The spelling of 2086469621 in words is "two billion, eighty-six million, four hundred sixty-nine thousand, six hundred twenty-one".