2170421774 has 4 divisors (see below), whose sum is σ = 3255632664. Its totient is φ = 1085210886.

The previous prime is 2170421767. The next prime is 2170421779. The reversal of 2170421774 is 4771240712.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170421779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542605442 + ... + 542605445.

It is an arithmetic number, because the mean of its divisors is an integer number (813908166).

Almost surely, 2^2170421774 is an apocalyptic number.

2170421774 is a deficient number, since it is larger than the sum of its proper divisors (1085210890).

2170421774 is a wasteful number, since it uses less digits than its factorization.

2170421774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085210889.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 2170421774 is about 46587.7856739296. The cubic root of 2170421774 is about 1294.7364637179.

The spelling of 2170421774 in words is "two billion, one hundred seventy million, four hundred twenty-one thousand, seven hundred seventy-four".