1491916 has 6 divisors (see below), whose sum is σ = 2610860. Its totient is φ = 745956.

The previous prime is 1491913. The next prime is 1491929. The reversal of 1491916 is 6191941.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1491911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186486 + ... + 186493.

2^1491916 is an apocalyptic number.

It is an amenable number.

1491916 is a deficient number, since it is larger than the sum of its proper divisors (1118944).

1491916 is a wasteful number, since it uses less digits than its factorization.

1491916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372983 (or 372981 counting only the distinct ones).

The product of its digits is 1944, while the sum is 31.

The square root of 1491916 is about 1221.4401336128. The cubic root of 1491916 is about 114.2654121675.

The spelling of 1491916 in words is "one million, four hundred ninety-one thousand, nine hundred sixteen".