1491093 has 18 divisors (see below), whose sum is σ = 2241954. Its totient is φ = 954912.

The previous prime is 1491079. The next prime is 1491097. The reversal of 1491093 is 3901941.

It can be written as a sum of positive squares in 3 ways, for example, as 675684 + 815409 = 822^2 + 903^2 .

It is not a de Polignac number, because 1491093 - 2¹⁸ = 1228949 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491097) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7471 + ... + 7667.

It is an arithmetic number, because the mean of its divisors is an integer number (124553).

2^1491093 is an apocalyptic number.

It is an amenable number.

1491093 is a deficient number, since it is larger than the sum of its proper divisors (750861).

1491093 is a wasteful number, since it uses less digits than its factorization.

1491093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1491093 is about 1221.1031897428. The cubic root of 1491093 is about 114.2443971926.

The spelling of 1491093 in words is "one million, four hundred ninety-one thousand, ninety-three".