1979688411 has 32 divisors (see below), whose sum is σ = 2967360000. Its totient is φ = 1304338464.

The previous prime is 1979688409. The next prime is 1979688439. The reversal of 1979688411 is 1148869791.

It is not a de Polignac number, because 1979688411 - 2¹ = 1979688409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1979688401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1762296 + ... + 1763418.

It is an arithmetic number, because the mean of its divisors is an integer number (92730000).

Almost surely, 2^1979688411 is an apocalyptic number.

1979688411 is a deficient number, since it is larger than the sum of its proper divisors (987671589).

1979688411 is a wasteful number, since it uses less digits than its factorization.

1979688411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1834 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 1979688411 is about 44493.6895638022. The cubic root of 1979688411 is about 1255.6413627335.

The spelling of 1979688411 in words is "one billion, nine hundred seventy-nine million, six hundred eighty-eight thousand, four hundred eleven".