1986956 has 12 divisors (see below), whose sum is σ = 3490368. Its totient is φ = 989712.

The previous prime is 1986949. The next prime is 1986967. The reversal of 1986956 is 6596891.

It is a d-powerful number, because it can be written as 1 + 9² + 8⁵ + 6² + 9³ + 5⁹ + 6³ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (290864).

2^1986956 is an apocalyptic number.

It is an amenable number.

1986956 is a deficient number, since it is larger than the sum of its proper divisors (1503412).

1986956 is a wasteful number, since it uses less digits than its factorization.

1986956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888 (or 1886 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 1986956 is about 1409.5942678658. The cubic root of 1986956 is about 125.7176005128.

The spelling of 1986956 in words is "one million, nine hundred eighty-six thousand, nine hundred fifty-six".