1191964 has 6 divisors (see below), whose sum is σ = 2085944. Its totient is φ = 595980.

The previous prime is 1191947. The next prime is 1191973. The reversal of 1191964 is 4691911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148992 + ... + 148999.

2^1191964 is an apocalyptic number.

It is an amenable number.

1191964 is a deficient number, since it is larger than the sum of its proper divisors (893980).

1191964 is a wasteful number, since it uses less digits than its factorization.

1191964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297995 (or 297993 counting only the distinct ones).

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

The square root of 1191964 is about 1091.7710382676. The cubic root of 1191964 is about 106.0281164290.

The spelling of 1191964 in words is "one million, one hundred ninety-one thousand, nine hundred sixty-four".