1491946 has 4 divisors (see below), whose sum is σ = 2237922. Its totient is φ = 745972.

The previous prime is 1491943. The next prime is 1491947. The reversal of 1491946 is 6491941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6491941 = 193 ⋅33637.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 314721 = 1085^2 + 561^2 .

It is not an unprimeable number, because it can be changed into a prime (1491943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372985 + ... + 372988.

2^1491946 is an apocalyptic number.

1491946 is a deficient number, since it is larger than the sum of its proper divisors (745976).

1491946 is an equidigital number, since it uses as much as digits as its factorization.

1491946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745975.

The product of its digits is 7776, while the sum is 34.

The square root of 1491946 is about 1221.4524141365. The cubic root of 1491946 is about 114.2661780594.

The spelling of 1491946 in words is "one million, four hundred ninety-one thousand, nine hundred forty-six".