1834721906 has 8 divisors (see below), whose sum is σ = 2913970140. Its totient is φ = 863398528.

The previous prime is 1834721881. The next prime is 1834721929. The reversal of 1834721906 is 6091274381.

It can be written as a sum of positive squares in 2 ways, for example, as 1830556225 + 4165681 = 42785^2 + 2041^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 26981171 + ... + 26981238.

Almost surely, 2^1834721906 is an apocalyptic number.

1834721906 is a deficient number, since it is larger than the sum of its proper divisors (1079248234).

1834721906 is a wasteful number, since it uses less digits than its factorization.

1834721906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962428.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1834721906 is about 42833.6538950391. The cubic root of 1834721906 is about 1224.2123285124.

The spelling of 1834721906 in words is "one billion, eight hundred thirty-four million, seven hundred twenty-one thousand, nine hundred six".