191612 has 6 divisors (see below), whose sum is σ = 335328. Its totient is φ = 95804.

The previous prime is 191599. The next prime is 191621. The reversal of 191612 is 216191.

191612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

191612 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 23948 + ... + 23955.

It is an arithmetic number, because the mean of its divisors is an integer number (55888).

2¹⁹¹⁶¹² is an apocalyptic number.

It is an amenable number.

191612 is a deficient number, since it is larger than the sum of its proper divisors (143716).

191612 is a wasteful number, since it uses less digits than its factorization.

191612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47907 (or 47905 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

The square root of 191612 is about 437.7350797000. The cubic root of 191612 is about 57.6510959925.

It can be divided in two parts, 19 and 1612, that multiplied together give a triangular number (30628 = T₂₄₇).

The spelling of 191612 in words is "one hundred ninety-one thousand, six hundred twelve".