1191612 has 24 divisors (see below), whose sum is σ = 2800000. Its totient is φ = 394416.

The previous prime is 1191611. The next prime is 1191613. The reversal of 1191612 is 2161911.

It is an interprime number because it is at equal distance from previous prime (1191611) and next prime (1191613).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191611) 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 7 ways as a sum of consecutive naturals, for example, 2139 + ... + 2637.

2^1191612 is an apocalyptic number.

1191612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1191612 is an abundant number, since it is smaller than the sum of its proper divisors (1608388).

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

1191612 is a wasteful number, since it uses less digits than its factorization.

1191612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its digits is 108, while the sum is 21.

The square root of 1191612 is about 1091.6098204029. The cubic root of 1191612 is about 106.0176783141.

Subtracting 1191612 from its reverse (2161911), we obtain a cube (970299 = 99³).

The spelling of 1191612 in words is "one million, one hundred ninety-one thousand, six hundred twelve".