2070841921 has 4 divisors (see below), whose sum is σ = 2072239792. Its totient is φ = 2069444052.

The previous prime is 2070841909. The next prime is 2070841951. The reversal of 2070841921 is 1291480702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1291480702 = 2 ⋅645740351.

It is a cyclic number.

It is not a de Polignac number, because 2070841921 - 2⁷ = 2070841793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2070841951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696711 + ... + 699676.

It is an arithmetic number, because the mean of its divisors is an integer number (518059948).

Almost surely, 2^2070841921 is an apocalyptic number.

It is an amenable number.

2070841921 is a deficient number, since it is larger than the sum of its proper divisors (1397871).

2070841921 is a wasteful number, since it uses less digits than its factorization.

2070841921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397870.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2070841921 is about 45506.5041614932. The cubic root of 2070841921 is about 1274.6246586559.

The spelling of 2070841921 in words is "two billion, seventy million, eight hundred forty-one thousand, nine hundred twenty-one".