1391164 has 12 divisors (see below), whose sum is σ = 2444904. Its totient is φ = 692624.

The previous prime is 1391129. The next prime is 1391183. The reversal of 1391164 is 4611931.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 579 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (203742).

2^1391164 is an apocalyptic number.

It is an amenable number.

1391164 is a deficient number, since it is larger than the sum of its proper divisors (1053740).

1391164 is a wasteful number, since it uses less digits than its factorization.

1391164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 1482 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 1391164 is about 1179.4761549095. The cubic root of 1391164 is about 111.6330464863.

The spelling of 1391164 in words is "one million, three hundred ninety-one thousand, one hundred sixty-four".