1491146 has 4 divisors (see below), whose sum is σ = 2236722. Its totient is φ = 745572.

The previous prime is 1491109. The next prime is 1491157. The reversal of 1491146 is 6411941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6411941 = 17 ⋅377173.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 579121 = 955^2 + 761^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372785 + ... + 372788.

2^1491146 is an apocalyptic number.

1491146 is a deficient number, since it is larger than the sum of its proper divisors (745576).

1491146 is an equidigital number, since it uses as much as digits as its factorization.

1491146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745575.

The product of its digits is 864, while the sum is 26.

The square root of 1491146 is about 1221.1248912376. The cubic root of 1491146 is about 114.2457507593.

The spelling of 1491146 in words is "one million, four hundred ninety-one thousand, one hundred forty-six".