1728792123 has 8 divisors (see below), whose sum is σ = 2305248768. Its totient is φ = 1152431784.

The previous prime is 1728792119. The next prime is 1728792127. The reversal of 1728792123 is 3212978271.

1728792123 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1728792119) and next prime (1728792127).

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

It is not a de Polignac number, because 1728792123 - 2² = 1728792119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1728792127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53790 + ... + 79692.

It is an arithmetic number, because the mean of its divisors is an integer number (288156096).

Almost surely, 2^1728792123 is an apocalyptic number.

1728792123 is a deficient number, since it is larger than the sum of its proper divisors (576456645).

1728792123 is a wasteful number, since it uses less digits than its factorization.

1728792123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48153.

The product of its digits is 84672, while the sum is 42.

The square root of 1728792123 is about 41578.7460489130. The cubic root of 1728792123 is about 1200.1833337947.

The spelling of 1728792123 in words is "one billion, seven hundred twenty-eight million, seven hundred ninety-two thousand, one hundred twenty-three".