1323986857 has 8 divisors (see below), whose sum is σ = 1329939072. Its totient is φ = 1318044000.

The previous prime is 1323986849. The next prime is 1323986869. The reversal of 1323986857 is 7586893231.

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 1323986857 - 2³ = 1323986849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323986827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517732 + ... + 520282.

It is an arithmetic number, because the mean of its divisors is an integer number (166242384).

Almost surely, 2^1323986857 is an apocalyptic number.

It is an amenable number.

1323986857 is a deficient number, since it is larger than the sum of its proper divisors (5952215).

1323986857 is a wasteful number, since it uses less digits than its factorization.

1323986857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679.

The product of its digits is 2177280, while the sum is 52.

The square root of 1323986857 is about 36386.6301957189. The cubic root of 1323986857 is about 1098.0646014370.

The spelling of 1323986857 in words is "one billion, three hundred twenty-three million, nine hundred eighty-six thousand, eight hundred fifty-seven".