2070856921 has 32 divisors (see below), whose sum is σ = 2555504640. Its totient is φ = 1637888256.

The previous prime is 2070856901. The next prime is 2070856933. The reversal of 2070856921 is 1296580702.

It is not a de Polignac number, because 2070856921 - 2⁹ = 2070856409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2070856901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1310710 + ... + 1312288.

It is an arithmetic number, because the mean of its divisors is an integer number (79859520).

Almost surely, 2^2070856921 is an apocalyptic number.

It is an amenable number.

2070856921 is a deficient number, since it is larger than the sum of its proper divisors (484647719).

2070856921 is a wasteful number, since it uses less digits than its factorization.

2070856921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2070856921 is about 45506.6689728000. The cubic root of 2070856921 is about 1274.6277362003.

The spelling of 2070856921 in words is "two billion, seventy million, eight hundred fifty-six thousand, nine hundred twenty-one".