2021471790 has 64 divisors (see below), whose sum is σ = 5352201792. Its totient is φ = 485452800.

The previous prime is 2021471789. The next prime is 2021471791. The reversal of 2021471790 is 971741202.

It is an interprime number because it is at equal distance from previous prime (2021471789) and next prime (2021471791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021471791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47221 + ... + 79200.

It is an arithmetic number, because the mean of its divisors is an integer number (83628153).

Almost surely, 2^2021471790 is an apocalyptic number.

2021471790 is an abundant number, since it is smaller than the sum of its proper divisors (3330730002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021471790 is a wasteful number, since it uses less digits than its factorization.

2021471790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126485.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 2021471790 is about 44960.7805759642. The cubic root of 2021471790 is about 1264.4138035046.

The spelling of 2021471790 in words is "two billion, twenty-one million, four hundred seventy-one thousand, seven hundred ninety".