19430734 has 4 divisors (see below), whose sum is σ = 29146104. Its totient is φ = 9715366.

The previous prime is 19430731. The next prime is 19430743. The reversal of 19430734 is 43703491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43703491 = 13 ⋅3361807.

It is a junction number, because it is equal to n+sod(n) for n = 19430696 and 19430705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19430731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4857682 + ... + 4857685.

It is an arithmetic number, because the mean of its divisors is an integer number (7286526).

Almost surely, 2^19430734 is an apocalyptic number.

19430734 is a deficient number, since it is larger than the sum of its proper divisors (9715370).

19430734 is an equidigital number, since it uses as much as digits as its factorization.

19430734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715369.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 19430734 is about 4408.0306260279. The cubic root of 19430734 is about 268.8415571230.

It can be divided in two parts, 19430 and 734, that added together give a square (20164 = 142²).

The spelling of 19430734 in words is "nineteen million, four hundred thirty thousand, seven hundred thirty-four".