1980946 has 16 divisors (see below), whose sum is σ = 3271680. Its totient is φ = 892080.

The previous prime is 1980941. The next prime is 1980947. The reversal of 1980946 is 6490891.

It is not an unprimeable number, because it can be changed into a prime (1980941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2440 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (204480).

2^1980946 is an apocalyptic number.

1980946 is a deficient number, since it is larger than the sum of its proper divisors (1290734).

1980946 is a wasteful number, since it uses less digits than its factorization.

1980946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1980946 is about 1407.4608342686. The cubic root of 1980946 is about 125.5907186807.

It can be divided in two parts, 1980 and 946, that multiplied together give a triangular number (1873080 = T₁₉₃₅).

The spelling of 1980946 in words is "one million, nine hundred eighty thousand, nine hundred forty-six".