1979955245 has 8 divisors (see below), whose sum is σ = 2377685016. Its totient is φ = 1582805056.

The previous prime is 1979955239. The next prime is 1979955293. The reversal of 1979955245 is 5425599791.

It can be written as a sum of positive squares in 4 ways, for example, as 1066283716 + 913671529 = 32654^2 + 30227^2 .

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 1979955245 - 2⁶ = 1979955181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137342 + ... + 151071.

It is an arithmetic number, because the mean of its divisors is an integer number (297210627).

Almost surely, 2^1979955245 is an apocalyptic number.

It is an amenable number.

1979955245 is a deficient number, since it is larger than the sum of its proper divisors (397729771).

1979955245 is a wasteful number, since it uses less digits than its factorization.

1979955245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289791.

The product of its digits is 5103000, while the sum is 56.

The square root of 1979955245 is about 44496.6880228181. The cubic root of 1979955245 is about 1255.6977744316.

The spelling of 1979955245 in words is "one billion, nine hundred seventy-nine million, nine hundred fifty-five thousand, two hundred forty-five".