1331946 has 72 divisors (see below), whose sum is σ = 3717792. Its totient is φ = 334800.

The previous prime is 1331929. The next prime is 1331951. The reversal of 1331946 is 6491331.

Its product of digits (1944) is a multiple of the sum of its prime divisors (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42951 + ... + 42981.

It is an arithmetic number, because the mean of its divisors is an integer number (51636).

2^1331946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858896).

1331946 is an abundant number, since it is smaller than the sum of its proper divisors (2385846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331946 is a wasteful number, since it uses less digits than its factorization.

1331946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 54 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1331946 is about 1154.0996490771. The cubic root of 1331946 is about 110.0260544344.

The spelling of 1331946 in words is "one million, three hundred thirty-one thousand, nine hundred forty-six".