1979336853 has 12 divisors (see below), whose sum is σ = 3078968620. Its totient is φ = 1218053376.

The previous prime is 1979336839. The next prime is 1979336857. The reversal of 1979336853 is 3586339791.

1979336853 is a `hidden beast` number, since 197 + 93 + 368 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 126292644 + 1853044209 = 11238^2 + 43047^2 .

It is not a de Polignac number, because 1979336853 - 2⁶ = 1979336789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979336853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979336857) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8458588 + ... + 8458821.

Almost surely, 2^1979336853 is an apocalyptic number.

1979336853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1979336853 is a deficient number, since it is larger than the sum of its proper divisors (1099631767).

1979336853 is a wasteful number, since it uses less digits than its factorization.

1979336853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16917428 (or 16917425 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 1979336853 is about 44489.7387382754. The cubic root of 1979336853 is about 1255.5670316929.

The spelling of 1979336853 in words is "one billion, nine hundred seventy-nine million, three hundred thirty-six thousand, eight hundred fifty-three".