1721474834 has 4 divisors (see below), whose sum is σ = 2582212254. Its totient is φ = 860737416.

The previous prime is 1721474779. The next prime is 1721474837. The reversal of 1721474834 is 4384741271.

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

It can be written as a sum of positive squares in only one way, i.e., 986902225 + 734572609 = 31415^2 + 27103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1721474791 and 1721474800.

It is not an unprimeable number, because it can be changed into a prime (1721474837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430368707 + ... + 430368710.

Almost surely, 2^1721474834 is an apocalyptic number.

1721474834 is a deficient number, since it is larger than the sum of its proper divisors (860737420).

1721474834 is an equidigital number, since it uses as much as digits as its factorization.

1721474834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860737419.

The product of its digits is 150528, while the sum is 41.

The square root of 1721474834 is about 41490.6595994809. The cubic root of 1721474834 is about 1198.4876396800.

The spelling of 1721474834 in words is "one billion, seven hundred twenty-one million, four hundred seventy-four thousand, eight hundred thirty-four".