19612 has 6 divisors (see below), whose sum is σ = 34328. Its totient is φ = 9804.

The previous prime is 19609. The next prime is 19661. The reversal of 19612 is 21691.

It is an Ulam number.

It is a plaindrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 19612.

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, 2448 + ... + 2455.

2¹⁹⁶¹² is an apocalyptic number.

It is an amenable number.

19612 is a deficient number, since it is larger than the sum of its proper divisors (14716).

19612 is a wasteful number, since it uses less digits than its factorization.

19612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907 (or 4905 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

The square root of 19612 is about 140.0428505851. The cubic root of 19612 is about 26.9674963232.

It can be divided in two parts, 19 and 612, that multiplied together give a triangular number (11628 = T₁₅₂).

The spelling of 19612 in words is "nineteen thousand, six hundred twelve".