1578979873 has 8 divisors (see below), whose sum is σ = 1693025280. Its totient is φ = 1467286080.

The previous prime is 1578979861. The next prime is 1578979879. The reversal of 1578979873 is 3789798751.

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

It is a cyclic number.

It is not a de Polignac number, because 1578979873 - 2⁵ = 1578979841 is a prime.

It is a super-3 number, since 3×1578979873³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1578979879) 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, 586513 + ... + 589198.

It is an arithmetic number, because the mean of its divisors is an integer number (211628160).

Almost surely, 2^1578979873 is an apocalyptic number.

It is an amenable number.

1578979873 is a deficient number, since it is larger than the sum of its proper divisors (114045407).

1578979873 is a wasteful number, since it uses less digits than its factorization.

1578979873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175807.

The product of its digits is 26671680, while the sum is 64.

The square root of 1578979873 is about 39736.3797168288. The cubic root of 1578979873 is about 1164.4625648342.

The spelling of 1578979873 in words is "one billion, five hundred seventy-eight million, nine hundred seventy-nine thousand, eight hundred seventy-three".