1729112457 has 4 divisors (see below), whose sum is σ = 2305483280. Its totient is φ = 1152741636.

The previous prime is 1729112447. The next prime is 1729112471. The reversal of 1729112457 is 7542119271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1729112457 - 2¹⁵ = 1729079689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1729112447) 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, 288185407 + ... + 288185412.

It is an arithmetic number, because the mean of its divisors is an integer number (576370820).

Almost surely, 2^1729112457 is an apocalyptic number.

It is an amenable number.

1729112457 is a deficient number, since it is larger than the sum of its proper divisors (576370823).

1729112457 is an equidigital number, since it uses as much as digits as its factorization.

1729112457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576370822.

The product of its digits is 35280, while the sum is 39.

The square root of 1729112457 is about 41582.5980068586. The cubic root of 1729112457 is about 1200.2574579533.

The spelling of 1729112457 in words is "one billion, seven hundred twenty-nine million, one hundred twelve thousand, four hundred fifty-seven".