1990327 has 2 divisors, whose sum is σ = 1990328. Its totient is φ = 1990326.

The previous prime is 1990321. The next prime is 1990337. The reversal of 1990327 is 7230991.

It is a weak prime.

It is an emirp because it is prime and its reverse (7230991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1990327 - 2³ = 1990319 is a prime.

It is a super-2 number, since 2×1990327² = 7922803133858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1990321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995163 + 995164.

It is an arithmetic number, because the mean of its divisors is an integer number (995164).

2^1990327 is an apocalyptic number.

1990327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990327 is an equidigital number, since it uses as much as digits as its factorization.

1990327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1990327 is about 1410.7894952827. The cubic root of 1990327 is about 125.7886563711.

The spelling of 1990327 in words is "one million, nine hundred ninety thousand, three hundred twenty-seven".