1981346 has 4 divisors (see below), whose sum is σ = 2972022. Its totient is φ = 990672.

The previous prime is 1981337. The next prime is 1981349. The reversal of 1981346 is 6431891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1125721 + 855625 = 1061^2 + 925^2 .

It is a super-3 number, since 3×1981346³ = 23334700017694829208, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1981349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495335 + ... + 495338.

2^1981346 is an apocalyptic number.

1981346 is a deficient number, since it is larger than the sum of its proper divisors (990676).

1981346 is an equidigital number, since it uses as much as digits as its factorization.

1981346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990675.

The product of its digits is 5184, while the sum is 32.

The square root of 1981346 is about 1407.6029269648. The cubic root of 1981346 is about 125.5991713605.

The spelling of 1981346 in words is "one million, nine hundred eighty-one thousand, three hundred forty-six".