2070886921 has 2 divisors, whose sum is σ = 2070886922. Its totient is φ = 2070886920.

The previous prime is 2070886919. The next prime is 2070886963. The reversal of 2070886921 is 1296880702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1835694025 + 235192896 = 42845^2 + 15336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070886921 - 2¹ = 2070886919 is a prime.

Together with 2070886919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2070886721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035443460 + 1035443461.

It is an arithmetic number, because the mean of its divisors is an integer number (1035443461).

Almost surely, 2^2070886921 is an apocalyptic number.

It is an amenable number.

2070886921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2070886921 is an equidigital number, since it uses as much as digits as its factorization.

2070886921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 2070886921 is about 45506.9985936229. The cubic root of 2070886921 is about 1274.6338912445.

The spelling of 2070886921 in words is "two billion, seventy million, eight hundred eighty-six thousand, nine hundred twenty-one".