1979120273 has 4 divisors (see below), whose sum is σ = 2131360308. Its totient is φ = 1826880240.

The previous prime is 1979120219. The next prime is 1979120293. The reversal of 1979120273 is 3720219791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3720219791 = 7079 ⋅525529.

It can be written as a sum of positive squares in 2 ways, for example, as 1242703504 + 736416769 = 35252^2 + 27137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1979120273 - 2¹² = 1979116177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1979120273.

It is not an unprimeable number, because it can be changed into a prime (1979120293) 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, 76119998 + ... + 76120023.

It is an arithmetic number, because the mean of its divisors is an integer number (532840077).

Almost surely, 2^1979120273 is an apocalyptic number.

1979120273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1979120273 is a deficient number, since it is larger than the sum of its proper divisors (152240035).

1979120273 is a wasteful number, since it uses less digits than its factorization.

1979120273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152240034.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 1979120273 is about 44487.3046272754. The cubic root of 1979120273 is about 1255.5212351043.

The spelling of 1979120273 in words is "one billion, nine hundred seventy-nine million, one hundred twenty thousand, two hundred seventy-three".