1979519245 has 16 divisors (see below), whose sum is σ = 2592540288. Its totient is φ = 1439000640.

The previous prime is 1979519239. The next prime is 1979519317. The reversal of 1979519245 is 5429159791.

It is a de Polignac number, because none of the positive numbers 2^k-1979519245 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1979519192 and 1979519201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138787 + ... + 152383.

It is an arithmetic number, because the mean of its divisors is an integer number (162033768).

Almost surely, 2^1979519245 is an apocalyptic number.

It is an amenable number.

1979519245 is a deficient number, since it is larger than the sum of its proper divisors (613021043).

1979519245 is a wasteful number, since it uses less digits than its factorization.

1979519245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16260.

The product of its digits is 1020600, while the sum is 52.

The square root of 1979519245 is about 44491.7885120389. The cubic root of 1979519245 is about 1255.6055965196.

The spelling of 1979519245 in words is "one billion, nine hundred seventy-nine million, five hundred nineteen thousand, two hundred forty-five".