1191534 has 8 divisors (see below), whose sum is σ = 2383080. Its totient is φ = 397176.

The previous prime is 1191529. The next prime is 1191539. The reversal of 1191534 is 4351911.

It is an interprime number because it is at equal distance from previous prime (1191529) and next prime (1191539).

It is a sphenic number, since it is the product of 3 distinct primes.

1191534 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191539) 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 in 3 ways as a sum of consecutive naturals, for example, 99289 + ... + 99300.

It is an arithmetic number, because the mean of its divisors is an integer number (297885).

2^1191534 is an apocalyptic number.

1191534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1191534 is a wasteful number, since it uses less digits than its factorization.

1191534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198594.

The product of its digits is 540, while the sum is 24.

The square root of 1191534 is about 1091.5740927670. The cubic root of 1191534 is about 106.0153650445.

It can be divided in two parts, 119 and 1534, that added together give a triangular number (1653 = T₅₇).

The spelling of 1191534 in words is "one million, one hundred ninety-one thousand, five hundred thirty-four".