1722004138 has 8 divisors (see below), whose sum is σ = 2591420832. Its totient is φ = 858197196.

The previous prime is 1722004133. The next prime is 1722004139. The reversal of 1722004138 is 8314002271.

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

It is not an unprimeable number, because it can be changed into a prime (1722004133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401670 + ... + 1402897.

It is an arithmetic number, because the mean of its divisors is an integer number (323927604).

Almost surely, 2^1722004138 is an apocalyptic number.

1722004138 is a deficient number, since it is larger than the sum of its proper divisors (869416694).

1722004138 is a wasteful number, since it uses less digits than its factorization.

1722004138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804876.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1722004138 is about 41497.0377015035. The cubic root of 1722004138 is about 1198.6104605860.

The spelling of 1722004138 in words is "one billion, seven hundred twenty-two million, four thousand, one hundred thirty-eight".