1579497223 has 4 divisors (see below), whose sum is σ = 1579609360. Its totient is φ = 1579385088.

The previous prime is 1579497211. The next prime is 1579497233. The reversal of 1579497223 is 3227949751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1579497223 is a prime.

It is a super-2 number, since 2×1579497223² = 4989622954929423458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1579497203) 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, 31290 + ... + 64327.

It is an arithmetic number, because the mean of its divisors is an integer number (394902340).

Almost surely, 2^1579497223 is an apocalyptic number.

1579497223 is a deficient number, since it is larger than the sum of its proper divisors (112137).

1579497223 is an equidigital number, since it uses as much as digits as its factorization.

1579497223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112136.

The product of its digits is 952560, while the sum is 49.

The square root of 1579497223 is about 39742.8889614230. Note that the first 3 decimals coincide. The cubic root of 1579497223 is about 1164.5897289893.

The spelling of 1579497223 in words is "one billion, five hundred seventy-nine million, four hundred ninety-seven thousand, two hundred twenty-three".