1331492 has 6 divisors (see below), whose sum is σ = 2330118. Its totient is φ = 665744.

The previous prime is 1331489. The next prime is 1331497. The reversal of 1331492 is 2941331.

It can be written as a sum of positive squares in only one way, i.e., 729316 + 602176 = 854^2 + 776^2 .

It is not an unprimeable number, because it can be changed into a prime (1331497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166433 + ... + 166440.

It is an arithmetic number, because the mean of its divisors is an integer number (388353).

2^1331492 is an apocalyptic number.

It is an amenable number.

1331492 is a deficient number, since it is larger than the sum of its proper divisors (998626).

1331492 is a wasteful number, since it uses less digits than its factorization.

1331492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332877 (or 332875 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 1331492 is about 1153.9029421923. The cubic root of 1331492 is about 110.0135520493.

The spelling of 1331492 in words is "one million, three hundred thirty-one thousand, four hundred ninety-two".