1986201 has 40 divisors (see below), whose sum is σ = 3531264. Its totient is φ = 1088640.

The previous prime is 1986199. The next prime is 1986217. The reversal of 1986201 is 1026891.

It is not a de Polignac number, because 1986201 - 2¹ = 1986199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17521 + ... + 17633.

2^1986201 is an apocalyptic number.

It is an amenable number.

1986201 is a deficient number, since it is larger than the sum of its proper divisors (1545063).

1986201 is a wasteful number, since it uses less digits than its factorization.

1986201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1986201 is about 1409.3264348617. The cubic root of 1986201 is about 125.7016751789.

It can be divided in two parts, 1986 and 201, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1986201 in words is "one million, nine hundred eighty-six thousand, two hundred one".