1791421716 has 48 divisors (see below), whose sum is σ = 5058135936. Its totient is φ = 481726464.

The previous prime is 1791421703. The next prime is 1791421717. The reversal of 1791421716 is 6171241971.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791421717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625821 + ... + 628676.

It is an arithmetic number, because the mean of its divisors is an integer number (105377832).

Almost surely, 2^1791421716 is an apocalyptic number.

It is an amenable number.

1791421716 is an abundant number, since it is smaller than the sum of its proper divisors (3266714220).

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

1791421716 is a wasteful number, since it uses less digits than its factorization.

1791421716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254528 (or 1254526 counting only the distinct ones).

The product of its digits is 21168, while the sum is 39.

The square root of 1791421716 is about 42325.1900881733. The cubic root of 1791421716 is about 1214.5049191267.

The spelling of 1791421716 in words is "one billion, seven hundred ninety-one million, four hundred twenty-one thousand, seven hundred sixteen".