1986323 has 2 divisors, whose sum is σ = 1986324. Its totient is φ = 1986322.

The previous prime is 1986311. The next prime is 1986337. The reversal of 1986323 is 3236891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1986323 - 2⁸ = 1986067 is a prime.

It is equal to p₁₄₇₉₇₄ and since 1986323 and 147974 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1986323.

It is not a weakly prime, because it can be changed into another prime (1986373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993161 + 993162.

It is an arithmetic number, because the mean of its divisors is an integer number (993162).

2^1986323 is an apocalyptic number.

1986323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1986323 is an equidigital number, since it uses as much as digits as its factorization.

1986323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 1986323 is about 1409.3697172850. The cubic root of 1986323 is about 125.7042488174.

The spelling of 1986323 in words is "one million, nine hundred eighty-six thousand, three hundred twenty-three".