1986373 has 2 divisors, whose sum is σ = 1986374. Its totient is φ = 1986372.

The previous prime is 1986359. The next prime is 1986401. The reversal of 1986373 is 3736891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 6724 = 1407^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 1986373 - 2¹³ = 1978181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1986323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993186 + 993187.

It is an arithmetic number, because the mean of its divisors is an integer number (993187).

2^1986373 is an apocalyptic number.

It is an amenable number.

1986373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1986373 is an equidigital number, since it uses as much as digits as its factorization.

1986373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 1986373 is about 1409.3874555991. The cubic root of 1986373 is about 125.7053035569.

The spelling of 1986373 in words is "one million, nine hundred eighty-six thousand, three hundred seventy-three".